arm/dt: msm8974: Add GPU device

Add devicetree properties for GPU on msm8974.

Change-Id: I6c264decfb13b155f3a12dc3e662ab824cd70794
Signed-off-by: Pu Chen <puchen@codeaurora.org>
diff --git a/arch/arm/boot/dts/msm8974.dtsi b/arch/arm/boot/dts/msm8974.dtsi
index deb1834..12f46a3 100644
--- a/arch/arm/boot/dts/msm8974.dtsi
+++ b/arch/arm/boot/dts/msm8974.dtsi
@@ -14,6 +14,7 @@
 /include/ "msm8974_pm.dtsi"
 /include/ "msm8974-iommu.dtsi"
 /include/ "msm-gdsc.dtsi"
+/include/ "msm8974-gpu.dtsi"
 
 / {
 	model = "Qualcomm MSM 8974";