clk: cdce706: Constify struct regmap_config

The regmap_config struct may be const because it is not modified by the
driver and regmap_init() accepts pointer to const.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

drivers/clk/clk-cdce706.c

@@ -58,7 +58,7 @@
 #define CDCE706_CLKOUT_DIVIDER_MASK	0x7
 #define CDCE706_CLKOUT_ENABLE_MASK	0x8
 
-static struct regmap_config cdce706_regmap_config = {
+static const struct regmap_config cdce706_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.val_format_endian = REGMAP_ENDIAN_NATIVE,