[ALSA] hda-codec - Add missing model names for ALC882 codecs

Added the missing model option strings for ALC882 codecs.
Also added the corresponding description in ALSA-Configuration.txt.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

Documentation/sound/alsa/ALSA-Configuration.txt

@@ -849,6 +849,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	  3stack-dig	3-jack with SPDIF I/O
 	  6stack-dig	6-jack digital with SPDIF I/O
 	  arima		Arima W820Di1
+	  targa		Targa T8, MSI-1049 T8
+	  asus-a7j	ASUS A7J
+	  asus-a7m	ASUS A7M
 	  macpro	MacPro support
 	  mbp3		Macbook Pro rev3
 	  imac24	iMac 24'' with jack detection

sound/pci/hda/patch_realtek.c

@@ -5585,6 +5585,9 @@ static const char *alc882_models[ALC882_MODEL_LAST] = {
 	[ALC882_6ST_DIG]	= "6stack-dig",
 	[ALC882_ARIMA]		= "arima",
 	[ALC882_W2JC]		= "w2jc",
+	[ALC882_TARGA]		= "targa",
+	[ALC882_ASUS_A7J]	= "asus-a7j",
+	[ALC882_ASUS_A7M]	= "asus-a7m",
 	[ALC885_MACPRO]		= "macpro",
 	[ALC885_MBP3]		= "mbp3",
 	[ALC885_IMAC24]		= "imac24",