scsi: ufs-qcom: fix build errors incase UFS_QCOM is compiled as a module

In case UFS_QCOM component is compiled as a module, there will be
some building errors. This change fixes them.

Also, since UFS_QCOM didn't have MODULE_LICENSE(), it failed to be
loaded as a module:
"ufs_qcom: module license 'unspecified' taints kernel."
This patch also fixes this error.

Change-Id: I96c7c1cf012b29c954e50e77ed0849a4255f39b3
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>