ALSA: hda/realtek - Update headset mode for ALC225

Dell new platform with new hardware layout.
Old headset mode policy will cause headset mode check type has a
chance to check fail.
So, we update new headset mode to match new hardware layout.
New headset mode policy also could suitable to old hardware layout.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>