ALSA: hda/realtek - Fix headset mic on several Asus laptops with ALC255

Add pin quirks to enable use of the headset mic on Asus Z550MA,
X540LA, X540LJ, X556UR, Z450LA, and X441NC.

Signed-off-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>