arm64: dts: imx8mp-beacon-kit: Enable HDMI bridge HPD

The DSI to HDMI bridge supports hot-plut-detect, but the
driver didn't previously support a shared IRQ GPIO.  With
the driver updated, the interrupt can be added to the bridge.
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts

@@ -304,6 +304,8 @@ adv_bridge: hdmi@3d {
 		compatible = "adi,adv7535";
 		reg = <0x3d>, <0x3c>, <0x3e>, <0x3f>;
 		reg-names = "main", "cec", "edid", "packet";
+		interrupt-parent = <&gpio4>;
+		interrupts = <27 IRQ_TYPE_EDGE_FALLING>;
 		adi,dsi-lanes = <4>;
 		#sound-dai-cells = <0>;