[SCSI] qla2xxx: Change in setting UNLOADING flag and FC vports logout sequence...

[SCSI] qla2xxx: Change in setting UNLOADING flag and FC vports logout sequence while unloading qla2xxx driver.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Cc: <stable@vger.kernel.org> #3.7
Signed-off-by: James Bottomley <JBottomley@Parallels.com>