[SCSI] fc-transport: Use packed modifier for fc_bsg_request structure.

The 32bit kernel does not add padding bytes in the fc_bsg_request structure
whereas the 64bit kernel adds padding bytes in the fc_bsg_request structure.
Due to this, structure elements gets mismatched with 32bit application and
64bit kernel.To resolve this, used packed modifier to avoid adding padding bytes.
Signed-off-by: Giridhar Malavali <[e-mail]>
Signed-off-by: James Bottomley <[e-mail]>

include/scsi/scsi_bsg_fc.h

···
 		struct fc_bsg_rport_els		r_els;
 		struct fc_bsg_rport_ct		r_ct;
 	} rqst_data;
-};
+} __attribute__((packed));
 
 
 /* response (request sense data) structure of the sg_io_v4 */