ALSA: asihpi: Fix duplicate const for clock sources

Replace duplicated const keyword for 'sampleclock_sources' with proper
array of const pointers to const strings.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c
index e5cd7be..1039ecc 100644
--- a/sound/pci/asihpi/asihpi.c
+++ b/sound/pci/asihpi/asihpi.c
@@ -2376,7 +2376,7 @@
 /*------------------------------------------------------------
    Sampleclock source  controls
  ------------------------------------------------------------*/
-static const char const *sampleclock_sources[] = {
+static const char * const sampleclock_sources[] = {
 	"N/A", "Local PLL", "Digital Sync", "Word External", "Word Header",
 	"SMPTE", "Digital1", "Auto", "Network", "Invalid",
 	"Prev Module", "BLU-Link",