phy: qcom-qmp: Fix dts bindings to reflect reality

A few patches have landed for the qcom-qmp PHY that affect how you
would write a device tree node.  ...yet the bindings weren't updated.
Let's remedy the situation and make the bindings refelect reality.

Fixes: efb05a50 ("phy: qcom-qmp: Add support for QMP V3 USB3 PHY")
Fixes: ac0d2399 ("phy: qcom-qmp: Add support for runtime PM")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>