[SCSI] fcoe: Fix validation of mac address when checking for spma support

Fix this bug of validating the wrong mac address while checking for SAN MAC
address support from LLD as we should check ha->addr not ctlr.ctl_src_addr.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>