Add empty functions for usb_nop_xceiv_register()
and usb_nop_xceiv_unregister() in otg.h so that
these functions can be called even when
CONFIG_NOP_USB_XCEIV is not enabled.
It allows to remove ifdef's from board file.
Signed-off-by: Maulik Mankad <x0082077@ti.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Ajay Kumar Gupta <ajay.gupta@ti.com> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Felipe Balbi <felipe.balbi@nokia.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Tony Lindgren <tony@atomide.com>