avahi: add license info

Signed-off-by: Danomi Manchego <danomimanchego123@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/avahi/avahi.mk

@@ -13,6 +13,8 @@
 AVAHI_VERSION = 0.6.31
 AVAHI_SOURCE = avahi-$(AVAHI_VERSION).tar.gz
 AVAHI_SITE = http://www.avahi.org/download/
+AVAHI_LICENSE = LGPLv2.1+
+AVAHI_LICENSE_FILES = LICENSE
 AVAHI_INSTALL_STAGING = YES
 
 AVAHI_CONF_ENV = ac_cv_func_strtod=yes \