dt-bindings: phy: qcom, hdmi-phy-qmp: add clock-cells and XO clock

As the QMP HDMI PHY is a clock provider, add constant #clock-cells
property. For the compatibility with older DTs the property is not
marked as required. Also add the XO clock to the list of the clocks used
by the driver.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/492316/
Link: https://lore.kernel.org/r/20220704161148.814510-2-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

dt-bindings: display/msm: hdmi: split and convert to yaml

Convert Qualcomm HDMI binding into HDMI TX and PHY yaml bindings.

Changes to schema:
HDMI:
- fixed reg-names numbering to match 0..3 instead 0,1,3,4
- dropped qcom,tx-ddc-* from example, they were not documented
- make phy-names deprecated, drop it from the examples

PHY:
- moved into phy/ directory
- split into QMP and non-QMP PHY schemas

Co-developed-by: David Heidelberg <david@ixit.cz>
Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/488850/
Link: https://lore.kernel.org/r/20220609122350.3157529-2-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>