[ALSA] make local objects static

Memalloc module,PCM Midlevel,Timer Midlevel,GUS Library,AC97 Codec
ALI5451 driver,RME9652 driver
Make some functions/variables that are used in only one file static.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
diff --git a/sound/core/timer.c b/sound/core/timer.c
index cfaccd4..c3997e0 100644
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -799,13 +799,13 @@
 	return 0;
 }
 
-int snd_timer_dev_free(snd_device_t *device)
+static int snd_timer_dev_free(snd_device_t *device)
 {
 	snd_timer_t *timer = device->device_data;
 	return snd_timer_free(timer);
 }
 
-int snd_timer_dev_register(snd_device_t *dev)
+static int snd_timer_dev_register(snd_device_t *dev)
 {
 	snd_timer_t *timer = dev->device_data;
 	snd_timer_t *timer1;