sh-pfc: Move private definitions and declarations to private header

Move all private structure definitions and function declarations from
include/linux/sh_pfc.h to drivers/sh/pfc/core.h.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/drivers/sh/pfc/pinctrl.c b/drivers/sh/pfc/pinctrl.c
index 3a2c77d..5801a56 100644
--- a/drivers/sh/pfc/pinctrl.c
+++ b/drivers/sh/pfc/pinctrl.c
@@ -24,6 +24,8 @@
 #include <linux/pinctrl/pinmux.h>
 #include <linux/pinctrl/pinconf-generic.h>
 
+#include "core.h"
+
 struct sh_pfc_pinctrl {
 	struct pinctrl_dev *pctl;
 	struct sh_pfc *pfc;