HP Pavilion x360 Convertible machine, it supported mute led.
GPIO4 high will turn on led.
The patch will enable control led via GPIO4 pin.
Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1ae4d98e92c147b780ace3911c4e1d73@realtek.comSigned-off-by: Takashi Iwai <tiwai@suse.de>