Dell desktop platform supported headset Mic.
Add pin verb to enable headset Mic.
This platform only support fixed type headset for Iphone type.
Signed-off-by: NKailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/b9da28d772ef43088791b0f3675929e7@realtek.comSigned-off-by: NTakashi Iwai <tiwai@suse.de>