This platform need to set Mic VREF to 100%.
Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/0916af40f08a4348a3298a9a59e6967e@realtek.comSigned-off-by: Takashi Iwai <tiwai@suse.de>