phy: qcom-qmp-ufs: merge driver data

The UFS QMP PHY driver only manages a single PHY so merge the old
qcom_qmp and qmp_phy structures and drop the PHY array.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20221024090041.19574-3-johan+linaro@kernel.org


Signed-off-by: Vinod Koul <vkoul@kernel.org>