ALSA: hda - add ideapad model for Conexant 5051 codec

Lenovo IdeaPad Y430 has an additional subwoofer connected at pin 0x1b,
which isn't muted when headphone is plugged in. This adds additional
support to the extra subwoofer via new ideapad model.

Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/Documentation/sound/alsa/HD-Audio-Models.txt b/Documentation/sound/alsa/HD-Audio-Models.txt
index 1d38b0d..84e81ad 100644
--- a/Documentation/sound/alsa/HD-Audio-Models.txt
+++ b/Documentation/sound/alsa/HD-Audio-Models.txt
@@ -282,6 +282,7 @@
   hp		HP Spartan laptop
   hp-dv6736	HP dv6736
   hp-f700	HP Compaq Presario F700
+  ideapad	Lenovo IdeaPad laptop
   lenovo-x200	Lenovo X200 laptop
   toshiba	Toshiba Satellite M300