xilinx_ethlite: Clean up after commit 2f991ad The "fall through" added by the commit is clearly intentional. Mark it so. Hushes up Coverity. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>