sh: sh7723: Register PFC platform device

Add arch code to register the PFC platform device instead of calling the
driver directly. Platform device registration in the sh-pfc driver will
be removed.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 2f0d9bf..89fb594 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -433,6 +433,7 @@
 	select ARCH_SPARSEMEM_ENABLE
 	select SYS_SUPPORTS_CMT
 	select ARCH_WANT_OPTIONAL_GPIOLIB
+	select PINCTRL
 	help
 	  Select SH7723 if you have an SH-MobileR2 CPU.