[ALSA] ca0106: Cosmetic changes.

Modules: CA0106 driver

Just tidying up the code. Making more functions static.

Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
diff --git a/sound/pci/ca0106/ca_midi.c b/sound/pci/ca0106/ca_midi.c
index f439d14..9cc0c67 100644
--- a/sound/pci/ca0106/ca_midi.c
+++ b/sound/pci/ca0106/ca_midi.c
@@ -49,7 +49,7 @@
 #endif
 }
 
-void ca_midi_interrupt(ca_midi_t *midi, unsigned int status) {
+static void ca_midi_interrupt(ca_midi_t *midi, unsigned int status) {
 	unsigned char byte;
 
 	if (midi->rmidi == NULL) {
@@ -258,7 +258,7 @@
 	.trigger =	ca_midi_input_trigger,
 };
 
-void ca_midi_free(ca_midi_t *midi) {
+static void ca_midi_free(ca_midi_t *midi) {
 	midi->interrupt = NULL;
 	midi->interrupt_enable = NULL;
 	midi->interrupt_disable = NULL;