ALSA: bebob: More constify text arrays

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/firewire/bebob/bebob_focusrite.c b/sound/firewire/bebob/bebob_focusrite.c
index 45a0eed..a45a869 100644
--- a/sound/firewire/bebob/bebob_focusrite.c
+++ b/sound/firewire/bebob/bebob_focusrite.c
@@ -101,11 +101,11 @@
 				  &data, sizeof(__be32), 0);
 }
 
-static char *const saffirepro_26_clk_src_labels[] = {
+static const char *const saffirepro_26_clk_src_labels[] = {
 	SND_BEBOB_CLOCK_INTERNAL, "S/PDIF", "ADAT1", "ADAT2", "Word Clock"
 };
 
-static char *const saffirepro_10_clk_src_labels[] = {
+static const char *const saffirepro_10_clk_src_labels[] = {
 	SND_BEBOB_CLOCK_INTERNAL, "S/PDIF", "Word Clock"
 };
 static int
@@ -161,7 +161,7 @@
 }
 
 struct snd_bebob_spec saffire_le_spec;
-static char *const saffire_both_clk_src_labels[] = {
+static const char *const saffire_both_clk_src_labels[] = {
 	SND_BEBOB_CLOCK_INTERNAL, "S/PDIF"
 };
 static int
@@ -176,12 +176,12 @@
 
 	return err;
 };
-static char *const saffire_le_meter_labels[] = {
+static const char *const saffire_le_meter_labels[] = {
 	ANA_IN, ANA_IN, DIG_IN,
 	ANA_OUT, ANA_OUT, ANA_OUT, ANA_OUT,
 	STM_IN, STM_IN
 };
-static char *const saffire_meter_labels[] = {
+static const char *const saffire_meter_labels[] = {
 	ANA_IN, ANA_IN,
 	STM_IN, STM_IN, STM_IN, STM_IN, STM_IN,
 };