clk: imx: Make parent_names const pointer in composite-8m

The parent_names needs to be pointer to const pointer to const char.
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/imx/clk-composite-8m.c

@@ -123,7 +123,7 @@ static const struct clk_ops imx8m_clk_composite_divider_ops = {
 };
 
 struct clk *imx8m_clk_composite_flags(const char *name,
-					const char **parent_names,
+					const char * const *parent_names,
 					int num_parents, void __iomem *reg,
 					unsigned long flags)
 {

drivers/clk/imx/clk.h

@@ -354,7 +354,7 @@ struct clk *imx_clk_cpu(const char *name, const char *parent_name,
 		struct clk *step);
 
 struct clk *imx8m_clk_composite_flags(const char *name,
-					const char **parent_names,
+					const char * const *parent_names,
 					int num_parents, void __iomem *reg,
 					unsigned long flags);