Add ARM Mali Midgard device tree bindings and gpu node for rk3288

The ARM Mali Midgard GPU kernel driver is only available out-of-tree and is not going to be merged in its current form. However, it would be useful to have its device tree bindings merged. In particular, this would enable distributions to create working driver packages (dkms...) without having to patch the kernel.

The bindings for the earlier Mali Utgard GPU family have already been merged, so this is essentially the same scenario but for newer GPUs (Mali-T604 ~ Mali-T880).

This series of patches first imports the bindings from the latest driver release with some clean-up then adds a gpu node for the rk3288 SoC. This was successfully tested on a Radxa Rock2 Square board using Mali kernel driver r16p0 and r12p0 user-space binary.

Guillaume Tucker (4):
dt-bindings: gpu: add bindings for the ARM Mali Midgard GPU
ARM: dts: rockchip: add ARM Mali GPU node for rk3288
ARM: dts: rockchip: enable ARM Mali GPU on rk3288-rock2-som
ARM: dts: rockchip: enable ARM Mali GPU on rk3288-firefly

 .../devicetree/bindings/gpu/arm,mali-midgard.txt   | 53 ++++++++++++++++++++++
 arch/arm/boot/dts/rk3288-firefly.dtsi              |  5 ++
 arch/arm/boot/dts/rk3288-rock2-som.dtsi            |  5 ++
 arch/arm/boot/dts/rk3288.dtsi                      | 23 ++++++++++
 4 files changed, 86 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt

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2.11.0
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