[ALSA] hda-codec - Add ALC268 acer model

Added model=acer for ALC268 codec support.
The configuration is: headphone = 0x14, speaker = 0x15
needs hp-jack auto-detection.  The same routine as alc262-fujitsu model
is used.
Also, added the auto-muting routine for ALC268 model=toshiba.

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 7f14eb9..b42458f 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -833,6 +833,7 @@
 	ALC268
 	  3stack	3-stack model
 	  toshiba	Toshiba A205
+	  acer		Acer laptops
 	  auto		auto-config reading BIOS (default)
 
 	ALC662