[media] ov13858: remove duplicated const declaration

As reported by gcc:

drivers/media/i2c/ov13858.c:953:20: warning: duplicate const
drivers/media/i2c/ov13858.c:953:14: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]
 static const const s64 link_freq_menu_items[OV13858_NUM_OF_LINK_FREQS] = {
              ^~~~~
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/i2c/ov13858.c

@@ -950,7 +950,7 @@ static const char * const ov13858_test_pattern_menu[] = {
 #define OV13858_LINK_FREQ_INDEX_1	1
 
 /* Menu items for LINK_FREQ V4L2 control */
-static const const s64 link_freq_menu_items[OV13858_NUM_OF_LINK_FREQS] = {
+static const s64 link_freq_menu_items[OV13858_NUM_OF_LINK_FREQS] = {
 	OV13858_LINK_FREQ_1080MBPS,
 	OV13858_LINK_FREQ_540MBPS
 };