staging: imx-drm: Fix warning for static const char * array in imx-ldb.c

This patch fixes the warning "static const char * array should
probably be static const char * const" in imx-ldb.c.

Signed-off-by: Archana kumari <archanakumari959@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/imx-drm/imx-ldb.c

@@ -414,7 +414,7 @@ enum {
 	LVDS_BIT_MAP_JEIDA
 };
 
-static const char *imx_ldb_bit_mappings[] = {
+static const char * const imx_ldb_bit_mappings[] = {
 	[LVDS_BIT_MAP_SPWG]  = "spwg",
 	[LVDS_BIT_MAP_JEIDA] = "jeida",
 };