scsi: MAINTAINERS: Move FCoE to Hannes Reinecke

I'll be moving on to different things in the storage stack and Hannes
agreed to take over FCoE.

Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Acked-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>