MAINTAINERS: Update EBTABLES mailing list

It moved to netfilter-devel@vger.kernel.org.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>

MAINTAINERS

@@ -2292,8 +2292,7 @@ F:	drivers/scsi/eata_pio.*
 
 EBTABLES
 M:	Bart De Schuymer <bart.de.schuymer@pandora.be>
-L:	ebtables-user@lists.sourceforge.net
-L:	ebtables-devel@lists.sourceforge.net
+L:	netfilter-devel@vger.kernel.org
 W:	http://ebtables.sourceforge.net/
 S:	Maintained
 F:	include/linux/netfilter_bridge/ebt_*.h