clk: Constify parent name arrays

Drivers should be able to declare their arrays of parent names as const
so the APIs need to accept const arguments.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
[mturquette@linaro.org: constified gate]
Signed-off-by: Mike Turquette <mturquette@linaro.org>

drivers/clk/clk-mux.c

@@ -89,7 +89,7 @@ const struct clk_ops clk_mux_ops = {
 EXPORT_SYMBOL_GPL(clk_mux_ops);
 
 struct clk *clk_register_mux(struct device *dev, const char *name,
-		char **parent_names, u8 num_parents, unsigned long flags,
+		const char **parent_names, u8 num_parents, unsigned long flags,
 		void __iomem *reg, u8 shift, u8 width,
 		u8 clk_mux_flags, spinlock_t *lock)
 {

drivers/clk/clk.c

@@ -1328,7 +1328,7 @@ out:
  */
 struct clk *clk_register(struct device *dev, const char *name,
 		const struct clk_ops *ops, struct clk_hw *hw,
-		char **parent_names, u8 num_parents, unsigned long flags)
+		const char **parent_names, u8 num_parents, unsigned long flags)
 {
 	struct clk *clk;