sh: sh7785: 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 c99193f..7d5bc1d 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -494,6 +494,7 @@
 	select ARCH_SPARSEMEM_ENABLE
 	select SYS_SUPPORTS_NUMA
 	select ARCH_WANT_OPTIONAL_GPIOLIB
+	select PINCTRL
 
 config CPU_SUBTYPE_SH7786
 	bool "Support SH7786 processor"