dt-bindings: display/msm: qcom, mdss: fix HDMI PHY node names

On Qualcomm devices HDMI PHY node names were changed from hdmi-phy to
phy. Follow this change.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/517446/
Link: https://lore.kernel.org/r/20230109045453.316089-1-dmitry.baryshkov@linaro.org


Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>