[ALSA] ac97 - Added a codec patch for LM4550

Modules: AC97 Codec

Added a codec patch for LM4550.  It sets up a static volume resolution
table.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c
index 124c1bc..38b6c65 100644
--- a/sound/pci/ac97/ac97_codec.c
+++ b/sound/pci/ac97/ac97_codec.c
@@ -150,7 +150,7 @@
 { 0x49544561, 0xffffffff, "IT2646E",		patch_it2646,	NULL },
 { 0x4e534300, 0xffffffff, "LM4540,43,45,46,48",	NULL,		NULL }, // only guess --jk
 { 0x4e534331, 0xffffffff, "LM4549",		NULL,		NULL },
-{ 0x4e534350, 0xffffffff, "LM4550",		NULL,		NULL },
+{ 0x4e534350, 0xffffffff, "LM4550",		patch_lm4550,  	NULL }, // volume wrap fix 
 { 0x50534304, 0xffffffff, "UCB1400",		NULL,		NULL },
 { 0x53494c20, 0xffffffe0, "Si3036,8",		mpatch_si3036,	mpatch_si3036, AC97_MODEM_PATCH },
 { 0x54524102, 0xffffffff, "TR28022",		NULL,		NULL },