ALSA: hda/realtek - Supported HP mute Led for ALC286

New HP machine supported output mute led and input mute led.
ALC286:
GPIO1 to control output mute led.
GPIO5 to control input mute led.

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