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/core.c b/drivers/sh/pfc/core.c
index ecbe51d..72421a4 100644
--- a/drivers/sh/pfc/core.c
+++ b/drivers/sh/pfc/core.c
@@ -21,6 +21,8 @@
 #include <linux/ioport.h>
 #include <linux/pinctrl/machine.h>
 
+#include "core.h"
+
 static struct sh_pfc sh_pfc __read_mostly;
 
 static void pfc_iounmap(struct sh_pfc *pfc)