CHROMIUM: arm64: dts: mt8173-hana: add G2touchscreen driver

After Hana's kernel uprev to 4.19, there is no G2touchscreen in mt8173-elm-hana.dtsi, so add it in i2c3

BUG=b:198463519
TEST=emerge-hana sys-kernel/chromeos-kernel-4_19

Change-Id: If96e826354eeb3e4ceb4c164164cb7cf51a727b1
Signed-off-by: qinwentao <qinwentao@huaqin.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/3146810
Reviewed-by: Gekun Wu <wugekun@huaqin.corp-partner.google.com>
Reviewed-by: Chen-Tsung Hsieh <chentsung@chromium.org>
Commit-Queue: Chen-Tsung Hsieh <chentsung@chromium.org>
(cherry picked from commit 88345a1f09f388859e640c6f21eb4dd91623dce7)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/3157710
diff --git a/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi b/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi
index fe46ae6..423e71a 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi
@@ -33,6 +33,14 @@
 		interrupt-parent = <&pio>;
 		interrupts = <88 IRQ_TYPE_LEVEL_LOW>;
 	};
+
+	touchscreen4: touchscreen@40 {
+		compatible = "hid-over-i2c";
+		reg = <0x40>;
+		hid-descr-addr = <0x0001>;
+		interrupt-parent = <&pio>;
+		interrupts = <88 IRQ_TYPE_LEVEL_LOW>;
+	};
 };
 
 &i2c4 {