fcoe-uefi: Add check for usage

References: boo#965477

fcoe-uefi gets included by default on EFI systems,
as it does not do the same check that fcoe does,
therefore needlessly pulling in network modules.
This patch copies the check from fcoe to fcoe-uefi.

modules.d/95fcoe-uefi/module-setup.sh

@@ -12,6 +12,11 @@ check() {
     }
     [[ $hostonly ]] || [[ $mount_needs ]] && {
         [ -d /sys/firmware/efi ] || return 255
+        for c in /sys/bus/fcoe/devices/ctlr_* ; do
+            [ -L $c ] || continue
+            fcoe_ctlr=$c
+        done
+        [ -z "$fcoe_ctlr" ] && return 255
     }
     require_binaries dcbtool fipvlan lldpad ip readlink || return 1
     return 0