ALSA: hda: fixup headset for ASUS GU502 laptop

The GU502 requires a few steps to make headset i/o works properly:
pincfg, verbs to unmute headphone out and callback to toggle output
between speakers and headphone using jack.

Signed-off-by: Daniel Cordova A <danesc87@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210507173116.12043-1-danesc87@gmail.com


Signed-off-by: Takashi Iwai <tiwai@suse.de>