arm64: dts: allwinner: h616: Add GPADC device node

The H616 has a GPADC controller which is identical to the one found on
the D1/T113s/R329/T507 SoCs.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Link: https://lore.kernel.org/r/20240605172049.231108-4-macroalpha82@gmail.com
Signed-off-by: Chen-Yu Tsai <wens@csie.org>

Author: macromorgan

arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi

@@ -626,6 +626,17 @@
 			status = "disabled";
 		};
 
+		gpadc: adc@5070000 {
+			compatible = "allwinner,sun50i-h616-gpadc",
+				     "allwinner,sun20i-d1-gpadc";
+			reg = <0x05070000 0x400>;
+			clocks = <&ccu CLK_BUS_GPADC>;
+			resets = <&ccu RST_BUS_GPADC>;
+			interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+			#io-channel-cells = <1>;
+		};
+
 		ths: thermal-sensor@5070400 {
 			compatible = "allwinner,sun50i-h616-ths";
 			reg = <0x05070400 0x400>;