ARM: dts: r8a7745: add PFC support

Define the generic R8A7745 part of the PFC device node.
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7745.dtsi

 /*
  * Device Tree Source for the r8a7745 SoC
  *
- * Copyright (C) 2016 Cogent Embedded Inc.
+ * Copyright (C) 2016-2017 Cogent Embedded Inc.
  *
  * This file is licensed under the terms of the GNU General Public License
  * version 2. This program is licensed "as is" without any warranty of any
@@ -123,6 +123,11 @@
 			#power-domain-cells = <1>;
 		};
 
+		pfc: pin-controller@e6060000 {
+			compatible = "renesas,pfc-r8a7745";
+			reg = <0 0xe6060000 0 0x11c>;
+		};
+
 		dmac0: dma-controller@e6700000 {
 			compatible = "renesas,dmac-r8a7745",
 				     "renesas,rcar-dmac";