dt-bindings: display/msm/gmu: Add Adreno X2-85 GMU

dt-bindings: display/msm/gmu: Add Adreno X2-85 GMU

Document Adreno X2-85 GMU found in Glymur chipsets in the
dt-binding specification. It is very similar to Adreno 840
GMU with the additional requirement of RSCC HUB clock.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Akhil P Oommen <akhilpo@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/689032/
Message-ID: <20251118-kaana-gpu-support-v4-21-86eeb8e93fb6@oss.qualcomm.com>
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>