[ALSA] ac97: make patch_wolfson_wm97??_specific() functions static

AC97 Codec
Make the patch_wolfson_wm97??_specific() functions static again.
This patch was accidentally reverted in rev. 1.92.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

sound/pci/ac97/ac97_patch.c

@@ -375,7 +375,7 @@ AC97_DOUBLE("Front Playback Volume", AC97_WM97XX_FMIXER_VOL, 8, 0, 31, 1),
 AC97_SINGLE("Front Playback Switch", AC97_WM97XX_FMIXER_VOL, 15, 1, 1),
 };
 
-int patch_wolfson_wm9703_specific(ac97_t * ac97)
+static int patch_wolfson_wm9703_specific(ac97_t * ac97)
 {
 	/* This is known to work for the ViewSonic ViewPad 1000
 	 * Randolph Bentson <bentson@holmsjoen.com>
@@ -410,7 +410,7 @@ AC97_DOUBLE("Rear DAC Volume", AC97_WM9704_RPCM_VOL, 8, 0, 31, 1),
 AC97_DOUBLE("Surround Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1),
 };
 
-int patch_wolfson_wm9704_specific(ac97_t * ac97)
+static int patch_wolfson_wm9704_specific(ac97_t * ac97)
 {
 	int err, i;
 	for (i = 0; i < ARRAY_SIZE(wm9704_snd_ac97_controls); i++) {
@@ -433,7 +433,7 @@ int patch_wolfson04(ac97_t * ac97)
 	return 0;
 }
 
-int patch_wolfson_wm9705_specific(ac97_t * ac97)
+static int patch_wolfson_wm9705_specific(ac97_t * ac97)
 {
 	int err, i;
 	for (i = 0; i < ARRAY_SIZE(wm97xx_snd_ac97_controls); i++) {
@@ -558,7 +558,7 @@ AC97_SINGLE("Headphone ZC Switch", AC97_HEADPHONE, 7, 1, 0),
 AC97_SINGLE("Mono ZC Switch", AC97_MASTER_MONO, 7, 1, 0),
 };
 
-int patch_wolfson_wm9711_specific(ac97_t * ac97)
+static int patch_wolfson_wm9711_specific(ac97_t * ac97)
 {
 	int err, i;