arm64: dts: mediatek: mt8395-genio-1200-evk: add interrupt-parent for mt6360

This patch fix the warning introduced by mt6360 node in
mt8395-genio-1200-evk.dts.

arch/arm64/boot/dts/mediatek/mt8195.dtsi:464.4-27: Warning (interrupts_property): /soc/i2c@11d01000/pmic@34:#interrupt-cells: size is (8), expected multiple of 16

Add a missing 'interrupt-parent' to fix this warning.

Fixes: f2b543a1 ("arm64: dts: mediatek: add device-tree for Genio 1200 EVK board")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/linux-devicetree/20231212214737.230115-1-arnd@kernel.org/Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts

@@ -238,6 +238,7 @@ &i2c6 {
 	mt6360: pmic@34 {
 		compatible = "mediatek,mt6360";
 		reg = <0x34>;
+		interrupt-parent = <&pio>;
 		interrupts = <128 IRQ_TYPE_EDGE_FALLING>;
 		interrupt-names = "IRQB";
 		interrupt-controller;