At least the "qcom,sc8280xp-qmp-usb43dp-phy" binding requires a power
domain to be specified.

Fixes: aa27597e ("dt-bindings: phy: qcom,qmp: Add compatible for SC8280XP USB phys")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220902080705.12050-3-johan+linaro@kernel.orgSigned-off-by: Vinod Koul <vkoul@kernel.org>