ARM: shmobile: r8a7740: Add pin control device to device tree

Add a pfc node to the r8a7740 device tree and remove manual pinmux
initialization from the corresponding board files.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7740.dtsi

@@ -139,4 +139,12 @@
 			      0 72 0x4
 			      0 73 0x4>;
 	};
+
+	pfc: pfc@e6050000 {
+		compatible = "renesas,pfc-r8a7740";
+		reg = <0xe6050000 0x8000>,
+		      <0xe605800c 0x20>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
 };

arch/arm/mach-shmobile/board-armadillo800eva-reference.c

@@ -121,7 +121,7 @@
 
 static const struct pinctrl_map eva_pinctrl_map[] = {
 	/* SCIFA1 */
-	PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.1", "pfc-r8a7740",
+	PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.1", "e6050000.pfc",
 				  "scifa1_data", "scifa1"),
 };
 
@@ -170,22 +170,22 @@ static void __init eva_init(void)
 	eva_clock_init();
 
 	pinctrl_register_mappings(eva_pinctrl_map, ARRAY_SIZE(eva_pinctrl_map));
-	r8a7740_pinmux_init();
 
 	r8a7740_meram_workaround();
 
-	/*
-	 * Touchscreen
-	 * TODO: Move reset GPIO over to .dts when we can reference it
-	 */
-	gpio_request_one(166, GPIOF_OUT_INIT_HIGH, NULL); /* TP_RST_B */
-
 #ifdef CONFIG_CACHE_L2X0
 	/* Early BRESP enable, Shared attribute override enable, 32K*8way */
 	l2x0_init(IOMEM(0xf0002000), 0x40440000, 0x82000fff);
 #endif
 
 	r8a7740_add_standard_devices_dt();
+
+	/*
+	 * Touchscreen
+	 * TODO: Move reset GPIO over to .dts when we can reference it
+	 */
+	gpio_request_one(166, GPIOF_OUT_INIT_HIGH, NULL); /* TP_RST_B */
+
 	r8a7740_pm_init();
 }