ARM: shmobile: armadillo-reference: Move st1232 reset GPIO to DT

Reference the st1232 reset GPIO from the device tree and remove it from
board code.
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-armadillo800eva-reference.dts

@@ -10,6 +10,7 @@
 
 /dts-v1/;
 /include/ "r8a7740.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	model = "armadillo 800 eva reference";
@@ -43,6 +44,7 @@ touchscreen: st1232@55 {
 		interrupts = <2 0>; /* IRQ10: hwirq 2 on irqpin1 */
 		pinctrl-0 = <&st1232_pins>;
 		pinctrl-names = "default";
+		gpios = <&pfc 166 GPIO_ACTIVE_LOW>;
 	};
 };
 

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

@@ -158,7 +158,6 @@ static void __init eva_clock_init(void)
  */
 static void __init eva_init(void)
 {
-
 	r8a7740_clock_init(MD_CK0 | MD_CK2);
 	eva_clock_init();
 
@@ -171,12 +170,6 @@ static void __init eva_init(void)
 
 	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();
 }