arm64: dts: mt8192: Add pwm node

Add pwm node for mt8192 SoC.
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20220712114046.15574-2-allen-kh.cheng@mediatek.comSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt8192.dtsi

@@ -598,6 +598,17 @@ spi0: spi@1100a000 {
 			status = "disabled";
 		};
 
+		pwm0: pwm@1100e000 {
+			compatible = "mediatek,mt8183-disp-pwm";
+			reg = <0 0x1100e000 0 0x1000>;
+			interrupts = <GIC_SPI 171 IRQ_TYPE_LEVEL_HIGH 0>;
+			#pwm-cells = <2>;
+			clocks = <&topckgen CLK_TOP_DISP_PWM_SEL>,
+				 <&infracfg CLK_INFRA_DISP_PWM>;
+			clock-names = "main", "mm";
+			status = "disabled";
+		};
+
 		spi1: spi@11010000 {
 			compatible = "mediatek,mt8192-spi",
 				     "mediatek,mt6765-spi";