arm64: dts: ti: k3-j784s4-*: Add GPU node

commit d974fe267f06738d56c10871e9535b4b3a7fafbd from
git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git



Add GPU node for J784S4 SoC and enable it in the k3-j784s4-evm.dtb. This
is the same IMG BXS-4-64 core used in J721S2, so it shares the same
compatible value and power domain names.

Signed-off-by: Randolph Sapp <rs@ti.com>
Acked-by: Andrew Davis <afd@ti.com>
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>