sh-pfc: Constify all SoC data

None of the SoC data need to be modified. Constify it.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/sh-pfc/pinctrl.c b/drivers/pinctrl/sh-pfc/pinctrl.c
index 9978ad1..b4960df 100644
--- a/drivers/pinctrl/sh-pfc/pinctrl.c
+++ b/drivers/pinctrl/sh-pfc/pinctrl.c
@@ -141,7 +141,7 @@
 	struct sh_pfc *pfc = pmx->pfc;
 	int idx = sh_pfc_get_pin_index(pfc, offset);
 	struct sh_pfc_pin_config *cfg = &pmx->configs[idx];
-	struct sh_pfc_pin *pin = &pfc->info->pins[idx];
+	const struct sh_pfc_pin *pin = &pfc->info->pins[idx];
 	unsigned int mark = pin->enum_id;
 	unsigned long flags;
 	int ret = -EINVAL;
@@ -324,7 +324,8 @@
 		     number++, nr_pins++) {
 			struct sh_pfc_pin_config *cfg = &pmx->configs[nr_pins];
 			struct pinctrl_pin_desc *pin = &pmx->pins[nr_pins];
-			struct sh_pfc_pin *info = &pfc->info->pins[nr_pins];
+			const struct sh_pfc_pin *info =
+				&pfc->info->pins[nr_pins];
 
 			pin->number = number;
 			pin->name = info->name;