ALSA: hda - Add ASUS G751 quirk model entry

Add a corresponding model list entry for ASUS G751 so that user can
test the quirk for another compatible machines more easily.

Reported-and-tested-by: Håvard <hovardslill@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Documentation/sound/hd-audio/models.rst

@@ -309,6 +309,8 @@ asus-nx50
     ASUS Nx50 fixups
 asus-nx51
     ASUS Nx51 fixups
+asus-g751
+    ASUS G751 fixups
 alc891-headset
     Headset mode support on ALC891
 alc891-headset-multi

sound/pci/hda/patch_realtek.c

@@ -8194,6 +8194,7 @@ static const struct hda_model_fixup alc662_fixup_models[] = {
 	{.id = ALC668_FIXUP_DELL_XPS13, .name = "dell-xps13"},
 	{.id = ALC662_FIXUP_ASUS_Nx50, .name = "asus-nx50"},
 	{.id = ALC668_FIXUP_ASUS_Nx51, .name = "asus-nx51"},
+	{.id = ALC668_FIXUP_ASUS_G751, .name = "asus-g751"},
 	{.id = ALC891_FIXUP_HEADSET_MODE, .name = "alc891-headset"},
 	{.id = ALC891_FIXUP_DELL_MIC_NO_PRESENCE, .name = "alc891-headset-multi"},
 	{.id = ALC662_FIXUP_ACER_VERITON, .name = "acer-veriton"},