arm64: dts: juno: Enable GPU

Both Mali-T620 and Juno's HDLCD are now supported by upstream Mesa in
recent distros, so there's little reason not to enable the GPU by
default. At the very least it should offer a little extra CI coverage
for Panfrost probing and wiggling SCMI.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://lore.kernel.org/r/07e45a015ff8934c4571617c8e8e90205e430eb6.1718811097.git.robin.murphy@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

arch/arm64/boot/dts/arm/juno-base.dtsi

@@ -663,7 +663,6 @@
 		dma-coherent;
 		/* The SMMU is only really of interest to bare-metal hypervisors */
 		/* iommus = <&smmu_gpu 0>; */
-		status = "disabled";
 	};
 
 	sram: sram@2e000000 {