ALSA: hda/realtek: Fix mic mute LED for the HP Spectre x360 14

ALSA: hda/realtek: Fix mic mute LED for the HP Spectre x360 14

On the 'HP Spectre x360 Convertible 14-ea0xx' the microphone mute led is
controlled by GPIO 0x04. The speaker mute LED does not seem to be
exposed by GPIO and is there not set.

[ a slight coding-style fix by tiwai ]

Fixes: c3bb2b521944 ("ALSA: hda/realtek: Quirk for HP Spectre x360 14 amp setup")
Signed-off-by: Johnathon Clark <john.clark@cantab.net>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20211020131253.35894-1-john.clark@cantab.net
Signed-off-by: Takashi Iwai <tiwai@suse.de>