scsi: ufs: Only create one pm_qos object for the IRQ

Creating multiple pm_qos objects for the same IRQ causes them to clash
with one another. Since we're not using the nonsensical pm_qos groups
anyway, just force it to only create one pm_qos object.

Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>
Signed-off-by: Danny Lin <danny@kdrag0n.dev>