pinctrl: sh-pfc: r8a77990: Fix IOCTRL reg state after s2ram on R-Car E3

Due to an interaction with commit 9f2b76a2 ("pinctrl: sh-pfc:
r8a77990: Add R8A774C0 PFC support"), the state of the I/O Control
Registers is saved/restored during s2ram on RZ/G2E, but not on R-Car E3.
Hence on R-Car E3, SDHI voltage state is lost after system resume.

Fix this by registering the I/O Control Registers on R-Car E3, too.

Fixes: 33847a71 ("pinctrl: sh-pfc: r8a77990: Add voltage switch operations for SDHI")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>

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

@@ -5017,6 +5017,7 @@ const struct sh_pfc_soc_info r8a77990_pinmux_info = {
 
 	.cfg_regs = pinmux_config_regs,
 	.bias_regs = pinmux_bias_regs,
+	.ioctrl_regs = pinmux_ioctrl_regs,
 
 	.pinmux_data = pinmux_data,
 	.pinmux_data_size = ARRAY_SIZE(pinmux_data),