arm64: dts: imx8qm: Add GPU nodes

Add the DT node for the GPU core found on the i.MX8QM.

etnaviv-gpu 53100000.gpu: model: GC7000, revision: 6009
[drm] Initialized etnaviv 1.4.0 20151214 for etnaviv on minor 0
Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8qm.dtsi

@@ -564,6 +564,7 @@ clk_spdif1_rx: clock-spdif1-rx {
 	#include "imx8-ss-cm41.dtsi"
 	#include "imx8-ss-audio.dtsi"
 	#include "imx8-ss-vpu.dtsi"
+	#include "imx8-ss-gpu0.dtsi"
 	#include "imx8-ss-img.dtsi"
 	#include "imx8-ss-dma.dtsi"
 	#include "imx8-ss-conn.dtsi"