pinctrl: renesas: Mark local variable with const in ->set_mux()

We are not going to change pins in the ->set_mux() callback. Mark
the local variable with a const qualifier. While at it, make it
also unsigned.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20231204160033.1872569-2-andriy.shevchenko@linux.intel.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/renesas/pinctrl-rzg2l.c

@@ -273,7 +273,7 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
 	struct function_desc *func;
 	unsigned int i, *psel_val;
 	struct group_desc *group;
-	int *pins;
+	const unsigned int *pins;
 
 	func = pinmux_generic_get_function(pctldev, func_selector);
 	if (!func)

drivers/pinctrl/renesas/pinctrl-rzv2m.c

@@ -165,7 +165,7 @@ static int rzv2m_pinctrl_set_mux(struct pinctrl_dev *pctldev,
 	struct function_desc *func;
 	unsigned int i, *psel_val;
 	struct group_desc *group;
-	int *pins;
+	const unsigned int *pins;
 
 	func = pinmux_generic_get_function(pctldev, func_selector);
 	if (!func)