This change is motivated by Bart's suggestion in [1], which enables to
further reduce the scsi host lock usage in the ufs driver. The reason
why it make sense, because although the legacy interrupt is disabled by
some but not all ufshcd_hba_stop() callers, it is safe to nest
disable_irq() calls as it checks the irq depth.
[1] https://lore.kernel.org/linux-scsi/c58e4fce-0a74-4469-ad16-f1edbd670728@xxxxxxx/
Suggested-by: Bart Van Assche <bvanassche@xxxxxxx>
Signed-off-by: Avri Altman <avri.altman@xxxxxxx>