libs/libcap: add license tag

add license tag

Signed-off-by: Florian Eckert <fe@dev.tdt.de>

libs/libcap/Makefile

@@ -14,6 +14,8 @@ PKG_RELEASE:=1
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@KERNEL/linux/libs/security/linux-privs/libcap2
 PKG_HASH:=693c8ac51e983ee678205571ef272439d83afe62dd8e424ea14ad9790bc35162
+PKG_LICENSE:=GPL-2.0
+PKG_LICENSE_FILES:=License
 PKG_MAINTAINER:=Paul Wassi <p.wassi@gmx.at>
 
 PKG_INSTALL:=1