[media] cx231xx: fix compiler warnings

[media] cx231xx: fix compiler warnings

v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-audio.c: In function ‘snd_cx231xx_hw_capture_params’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-audio.c:527:6: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-audio.c:526:31: warning: variable ‘format’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-audio.c:526:25: warning: variable ‘rate’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-audio.c:526:15: warning: variable ‘channels’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-audio.c: In function ‘snd_cx231xx_capture_trigger’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-audio.c:589:6: warning: variable ‘retval’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-video.c: In function ‘cx231xx_isoc_copy’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-video.c:331:17: warning: variable ‘outp’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-video.c: In function ‘cx231xx_bulk_copy’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-video.c:434:17: warning: variable ‘outp’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-video.c: In function ‘cx231xx_reset_video_buffer’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-video.c:704:7: warning: variable ‘outp’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-core.c: In function ‘cx231xx_set_mode’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-core.c:699:6: warning: variable ‘errCode’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-core.c: In function ‘cx231xx_ep5_bulkout’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-core.c:763:6: warning: variable ‘errCode’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-core.c: In function ‘cx231xx_isoc_irq_callback’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-core.c:800:6: warning: variable ‘rc’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-core.c: In function ‘cx231xx_bulk_irq_callback’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-core.c:846:6: warning: variable ‘rc’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-core.c: In function ‘cx231xx_stop_TS1’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-core.c:1234:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-core.c: In function ‘cx231xx_start_TS1’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-core.c:1254:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c: In function ‘cx231xx_enable656’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c:937:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c: In function ‘cx231xx_disable656’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c:955:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c: In function ‘cx231xx_dump_HH_reg’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c:1323:5: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c: In function ‘cx231xx_dump_SC_reg’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c:1358:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c: In function ‘cx231xx_Setup_AFE_for_LowIF’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c:1444:5: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c: In function ‘cx231xx_set_Colibri_For_LowIF’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c:1504:5: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c: In function ‘cx231xx_set_DIF_bandpass’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c:1559:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c: In function ‘cx231xx_gpio_i2c_write’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-avcore.c:3093:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-417.c: In function ‘cx231xx_initialize_codec’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-417.c:1098:9: warning: variable ‘data’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-417.c: In function ‘vidioc_streamon’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-417.c:1795:6: warning: variable ‘rc’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-vbi.c: In function ‘cx231xx_isoc_vbi_copy’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-vbi.c:86:25: warning: variable ‘buf’ set but not used [-Wunused-but-set-variable]
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-vbi.c: In function ‘cx231xx_irq_vbi_callback’:
v4l-dvb-git/drivers/media/video/cx231xx/cx231xx-vbi.c:313:6: warning: variable ‘rc’ set but not used [-Wunused-but-set-variable]

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>