Replace legacy MMS114 touchscreen properties to fix dtschema warnings:

  arch/arm/boot/dts/exynos4412-n710x.dt.yaml: touchscreen@48:
    'x-size', 'y-size' do not match any of the regexes: 'pinctrl-[0-9]+'
  arch/arm/boot/dts/exynos4412-n710x.dt.yaml: touchscreen@48:
    'touchscreen-size-x' is a required property

Signed-off-by: Krzysztof Kozlowski <redacted>
---
 arch/arm/boot/dts/exynos4412-n710x.dts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/exynos4412-n710x.dts b/arch/arm/boot/dts/exynos4412-n710x.dts
index c49dbb7847b8..2c792142605c 100644
--- a/arch/arm/boot/dts/exynos4412-n710x.dts
+++ b/arch/arm/boot/dts/exynos4412-n710x.dts

@@ -50,8 +50,8 @@ touchscreen@48 {
 		reg = <0x48>;
 		interrupt-parent = <&gpm2>;
 		interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
-		x-size = <720>;
-		y-size = <1280>;
+		touchscreen-size-x = <720>;
+		touchscreen-size-y = <1280>;
 		avdd-supply = <&ldo23_reg>;
 		vdd-supply = <&ldo24_reg>;
 	};

-- 
2.25.1