lzop: define license

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/lzop/lzop.mk

@@ -6,6 +6,8 @@
 LZOP_VERSION = 1.03
 LZOP_SOURCE = lzop-$(LZOP_VERSION).tar.gz
 LZOP_SITE = http://www.lzop.org/download/
+LZOP_LICENSE = GPLv2+
+LZOP_LICENSE_FILES = COPYING
 LZOP_DEPENDENCIES = lzo
 
 $(eval $(call AUTOTARGETS))