arm64: dts: mediatek: add per-SoC compatibles for keypad nodes

The mt6779-keypad binding specifies using a compatible for the
actual SoC before the generic MT6779 one.

Fixes: a801341 ("arm64: dts: mediatek: mt8183: add keyboard node")
Fixes: 6ff9453 ("arm64: dts: mediatek: Initial mt8365-evk support")
Signed-off-by: Val Packett <val@packett.cool>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20241225192631.25017-3-val@packett.cool
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Author: valpackett

arch/arm64/boot/dts/mediatek/mt8183.dtsi

@@ -1024,7 +1024,8 @@
 		};
 
 		keyboard: keyboard@10010000 {
-			compatible = "mediatek,mt6779-keypad";
+			compatible = "mediatek,mt8183-keypad",
+				     "mediatek,mt6779-keypad";
 			reg = <0 0x10010000 0 0x1000>;
 			interrupts = <GIC_SPI 186 IRQ_TYPE_EDGE_FALLING>;
 			clocks = <&clk26m>;

arch/arm64/boot/dts/mediatek/mt8365.dtsi

@@ -449,7 +449,8 @@
 		};
 
 		keypad: keypad@10010000 {
-			compatible = "mediatek,mt6779-keypad";
+			compatible = "mediatek,mt8365-keypad",
+				     "mediatek,mt6779-keypad";
 			reg = <0 0x10010000 0 0x1000>;
 			wakeup-source;
 			interrupts = <GIC_SPI 124 IRQ_TYPE_EDGE_FALLING>;