arm64: tegra: p3310: Explicitly enable GPU

The gpu node originally was explicitly left disabled as it was expected
for the bootloader to enable it. However, this is only done in u-boot.
If u-boot is not in the boot chain, this will never be enabled. Other
Tegra186 devices already explicitly enable the gpu, so make p3310 match.

Signed-off-by: Aaron Kling <webgeek1234@gmail.com>

arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi

@@ -191,6 +191,10 @@
 		nvidia,invert-interrupt;
 	};
 
+	gpu@17000000 {
+		status = "okay";
+	};
+
 	bpmp {
 		i2c {
 			status = "okay";