[ALSA] Add ASUS Z71V support

Documentation,HDA Codec driver
Added the ASUS Z71V (or similar) laptop support.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index ef07506..d49325e 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -636,6 +636,7 @@
 	  5stack	5-jack in back, 2-jack in front
 	  5stack-digout	5-jack in back, 2-jack in front, a SPDIF out
 	  w810		3-jack
+	  z71v		3-jack (HP shared SPDIF)
 
 	CMI9880
 	  minimal	3-jack in back