dt-bindings: display/msm: Add SM7150 MDSS

Document the MDSS hardware found on the Qualcomm SM7150 platform.
Signed-off-by: Danila Tikhonov <danila@jiaxyga.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/599132/
Link: https://lore.kernel.org/r/20240614215855.82093-4-danila@jiaxyga.comSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>