[ALSA] hda-codec - Add asus model to ALC861 codec

This patch adds support for Asus laptops (for example: Asus
A6Rp-AP002).

Signed-off-by: Mariusz Domanski <mariook@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index feb97bd..e4255f6 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -831,6 +831,7 @@
 	  3stack-660	3-jack (for ALC660)
 	  uniwill-m31	Uniwill M31 laptop
 	  toshiba	Toshiba laptop support
+	  asus		Asus laptop support
 	  auto		auto-config reading BIOS (default)
 
 	CMI9880