pinctrl: renesas: sh73a0: Use rdev_get_drvdata()

Replace `reg_data` access with the official wrapper. The field is going
away soon.

Signed-off-by: Michał Mirosław <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Link: https://lore.kernel.org/bb6b85722d80d665779e3043d1499c4fc38f0ff3.1714562004.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Geert Uytterhoeven <[email protected]>

Author: osctobe

drivers/pinctrl/renesas/pfc-sh73a0.c

@@ -4024,7 +4024,7 @@ static const struct pinmux_irq pinmux_irqs[] = {
 
 static void sh73a0_vccq_mc0_endisable(struct regulator_dev *reg, bool enable)
 {
-	struct sh_pfc *pfc = reg->reg_data;
+	struct sh_pfc *pfc = rdev_get_drvdata(reg);
 	void __iomem *addr = pfc->windows[1].virt + 4;
 	unsigned long flags;
 	u32 value;
@@ -4057,7 +4057,7 @@ static int sh73a0_vccq_mc0_disable(struct regulator_dev *reg)
 
 static int sh73a0_vccq_mc0_is_enabled(struct regulator_dev *reg)
 {
-	struct sh_pfc *pfc = reg->reg_data;
+	struct sh_pfc *pfc = rdev_get_drvdata(reg);
 	void __iomem *addr = pfc->windows[1].virt + 4;
 	unsigned long flags;
 	u32 value;