dt-bindings: display: msm: drop redundant part of title

dt-bindings: display: msm: drop redundant part of title

The Devicetree bindings document does not have to say in the title that
contains "DT properties", but instead just describe the hardware.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/516033/
Link: https://lore.kernel.org/r/20221225115925.55337-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>