clk: versaclock3: Use u8 return type for get_parent() callback

The return type of get_parent() member in struct clk_ops is u8.
Use same return type for corresponding callback function as well.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20231122142310.203169-4-biju.das.jz@bp.renesas.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/clk-versaclock3.c

@@ -210,7 +210,7 @@ static const struct clk_div_table div3_divs[] = {
 
 static struct clk_hw *clk_out[6];
 
-static unsigned char vc3_pfd_mux_get_parent(struct clk_hw *hw)
+static u8 vc3_pfd_mux_get_parent(struct clk_hw *hw)
 {
 	struct vc3_hw_data *vc3 = container_of(hw, struct vc3_hw_data, hw);
 	const struct vc3_clk_data *pfd_mux = vc3->data;
@@ -440,7 +440,7 @@ static const struct clk_ops vc3_pll_ops = {
 	.set_rate = vc3_pll_set_rate,
 };
 
-static unsigned char vc3_div_mux_get_parent(struct clk_hw *hw)
+static u8 vc3_div_mux_get_parent(struct clk_hw *hw)
 {
 	struct vc3_hw_data *vc3 = container_of(hw, struct vc3_hw_data, hw);
 	const struct vc3_clk_data *div_mux = vc3->data;
@@ -558,7 +558,7 @@ static int vc3_clk_mux_determine_rate(struct clk_hw *hw,
 	return ret;
 }
 
-static unsigned char vc3_clk_mux_get_parent(struct clk_hw *hw)
+static u8 vc3_clk_mux_get_parent(struct clk_hw *hw)
 {
 	struct vc3_hw_data *vc3 = container_of(hw, struct vc3_hw_data, hw);
 	const struct vc3_clk_data *clk_mux = vc3->data;