ALSA: hda/ca0132 - Make some symbols static

sound/pci/hda/patch_ca0132.c:387:19: sparse: symbol 'ca0132_voicefx' was not declared. Should it be static?
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_ca0132.c

@@ -387,14 +387,14 @@ struct ct_voicefx_preset {
 	unsigned int vals[VOICEFX_MAX_PARAM_COUNT];
 };
 
-struct ct_voicefx ca0132_voicefx = {
+static struct ct_voicefx ca0132_voicefx = {
 	.name = "VoiceFX Capture Switch",
 	.nid = VOICEFX,
 	.mid = 0x95,
 	.reqs = {10, 11, 12, 13, 14, 15, 16, 17, 18}
 };
 
-struct ct_voicefx_preset ca0132_voicefx_presets[] = {
+static struct ct_voicefx_preset ca0132_voicefx_presets[] = {
 	{ .name = "Neutral",
 	  .vals = { 0x00000000, 0x43C80000, 0x44AF0000,
 		    0x44FA0000, 0x3F800000, 0x3F800000,