ARM: dts: sun7i: Add PA gpio pin to Wexler TAB7200 tablet

Add PA gpio pin for controlling power of two external amplifiers (NS4890) which are used on the Wexler TAB7200 tablet
Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun7i-a20-wexler-tab7200.dts

@@ -74,6 +74,9 @@ chosen {
 };
 
 &codec {
+	pinctrl-names = "default";
+	pinctrl-0 = <&codec_pa_pin>;
+	allwinner,pa-gpios = <&pio 7 15 GPIO_ACTIVE_HIGH>; /* PH15 */
 	status = "okay";
 };
 
@@ -176,6 +179,13 @@ bl_enable_pin: bl_enable_pin@0 {
 		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
 	};
 
+	codec_pa_pin: codec_pa_pin@0 {
+		allwinner,pins = "PH15";
+		allwinner,function = "gpio_out";
+		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+	};
+
 	ts_reset_pin: ts_reset_pin@0 {
 		allwinner,pins = "PB13";
 		allwinner,function = "gpio_out";