[ALSA] Fix and cleanup of CM9880 auto-configuration

HDA Codec driver
Fix and cleanup of CM9880 automatic PIN configuration.
snd_hda_codec_setup_stream() doesn't do anything when NID is 0.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 263f5b6..43fc245 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -259,7 +259,9 @@
 /* configuration default - 32bit */
 #define AC_DEFCFG_SEQUENCE		(0xf<<0)
 #define AC_DEFCFG_DEF_ASSOC		(0xf<<4)
+#define AC_DEFCFG_ASSOC_SHIFT		4
 #define AC_DEFCFG_MISC			(0xf<<8)
+#define AC_DEFCFG_MISC_SHIFT		8
 #define AC_DEFCFG_COLOR			(0xf<<12)
 #define AC_DEFCFG_COLOR_SHIFT		12
 #define AC_DEFCFG_CONN_TYPE		(0xf<<16)