pinctrl: sh-pfc: r8a77990: Rename IOCTRLx registers

The R-Car Gen3 HardWare Manual Errata for Rev. 1.00 (Jul 2, 2018)
renamed the various miscellaneous I/O control registers (IOCTRLx) on
R-Car E3, to reflect better their actual purposes, and matching other
SoCs.

Update the code to match this.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>

drivers/pinctrl/sh-pfc/pfc-r8a77990.c

@@ -4995,11 +4995,11 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = {
 };
 
 enum ioctrl_regs {
-	IOCTRL30,
+	POCCTRL0,
 };
 
 static const struct pinmux_ioctrl_reg pinmux_ioctrl_regs[] = {
-	[IOCTRL30] = { 0xe6060380, },
+	[POCCTRL0] = { 0xe6060380, },
 	{ /* sentinel */ },
 };
 
@@ -5008,7 +5008,7 @@ static int r8a77990_pin_to_pocctrl(struct sh_pfc *pfc, unsigned int pin,
 {
 	int bit = -EINVAL;
 
-	*pocctrl = pinmux_ioctrl_regs[IOCTRL30].reg;
+	*pocctrl = pinmux_ioctrl_regs[POCCTRL0].reg;
 
 	if (pin >= RCAR_GP_PIN(3, 0) && pin <= RCAR_GP_PIN(3, 11))
 		bit = pin & 0x1f;