ebtables: add license information

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/ebtables/ebtables.mk

@@ -7,6 +7,8 @@
 EBTABLES_VERSION = 2.0.10-4
 EBTABLES_SOURCE = ebtables-v$(EBTABLES_VERSION).tar.gz
 EBTABLES_SITE = http://$(BR2_SOURCEFORGE_MIRROR).dl.sourceforge.net/sourceforge/ebtables
+EBTABLES_LICENSE = GPLv2
+EBTABLES_LICENSE_FILES = COPYING
 
 define EBTABLES_BUILD_CMDS
 	$(MAKE) $(TARGET_CONFIGURE_OPTS) LIBDIR=/lib/ebtables -C $(@D)