scsi: ufs: core: Honor runtime/system PM levels if set by host controller drivers

Otherwise, the default levels will override the levels set by the host
controller drivers.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20241219-ufs-qcom-suspend-fix-v3-2-63c4b95a70b9@linaro.org


Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>