[SCSI] ufs: use devres functions for ufshcd

This patch replaces normal calls for resource allocation with devm_*()
derivative functions. It makes resource freeing simpler.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>