ARM: dts: sun8i: reference-design-tablet: ldo_io1 is vcc-touchscreen

On some Q8 and other tablets ldo_io1 is used as vcc-touchscreen,
config at as such in sun8i-reference-design-tablet.dtsi.

Note that it will only be enabled when it us actually referenced by
a foo-supply property in the touchscreen node, so for tablets which
do not use ldo_io1 as vcc-touchscreen, it will be disabled.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun8i-a23-polaroid-mid2407pxe03.dts

@@ -98,13 +98,6 @@ wifi_pwrseq_pin_mid2407: wifi_pwrseq_pin@0 {
 	};
 };
 
-&reg_ldo_io1 {
-	regulator-min-microvolt = <3300000>;
-	regulator-max-microvolt = <3300000>;
-	regulator-name = "vcc-touchscreen";
-	status = "okay";
-};
-
 &touchscreen {
 	reg = <0x40>;
 	compatible = "silead,gsl1680";

arch/arm/boot/dts/sun8i-reference-design-tablet.dtsi

@@ -209,6 +209,13 @@ &reg_drivevbus {
 	status = "okay";
 };
 
+&reg_ldo_io1 {
+	regulator-min-microvolt = <3300000>;
+	regulator-max-microvolt = <3300000>;
+	regulator-name = "vcc-touchscreen";
+	status = "okay";
+};
+
 &reg_rtc_ldo {
 	regulator-name = "vcc-rtc";
 };