boa: define license

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/boa/boa.mk

@@ -5,8 +5,9 @@
 ################################################################################
 
 BOA_VERSION = 0.94.14rc21
-BOA_SOURCE = boa-$(BOA_VERSION).tar.gz
 BOA_SITE = http://www.boa.org/
+BOA_LICENSE = GPLv2+
+BOA_LICENSE_FILES = COPYING
 
 define BOA_INSTALL_TARGET_CMDS
 	install -D -m 755 $(@D)/src/boa $(TARGET_DIR)/usr/sbin/boa