[ALSA] make code static

CA0106 driver,HDA Codec driver
This patch makes needlessly global code static.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/ca0106/ca0106_proc.c

@@ -95,7 +95,7 @@ static struct snd_ca0106_category_str snd_ca0106_con_category[] = {
 };
 
 
-void snd_ca0106_proc_dump_iec958( snd_info_buffer_t *buffer, u32 value)
+static void snd_ca0106_proc_dump_iec958( snd_info_buffer_t *buffer, u32 value)
 {
 	int i;
 	u32 status[4];

sound/pci/hda/hda_codec.c

@@ -662,7 +662,7 @@ static void put_vol_mute(struct hda_codec *codec,
 /*
  * read/write AMP value.  The volume is between 0 to 0x7f, 0x80 = mute bit.
  */
-int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch, int direction, int index)
+static int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch, int direction, int index)
 {
 	struct hda_amp_info *info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, index));
 	if (! info)
@@ -671,7 +671,7 @@ int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch, int d
 	return info->vol[ch];
 }
 
-int snd_hda_codec_amp_write(struct hda_codec *codec, hda_nid_t nid, int ch, int direction, int idx, int val)
+static int snd_hda_codec_amp_write(struct hda_codec *codec, hda_nid_t nid, int ch, int direction, int idx, int val)
 {
 	struct hda_amp_info *info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, idx));
 	if (! info)