scsi: ufs: Make the config_scaling_param calls type safe

Pass the actual type to config_scaling_param callback as the third argment
instead of a void pointer. Remove a superfluous NULL pointer check from
ufs_qcom_config_scaling_param().

Link: https://lore.kernel.org/r/20220419225811.4127248-15-bvanassche@acm.org


Tested-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>