libs/libgpg-error: add license tag

add license tag

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

libs/libgpg-error/Makefile

@@ -14,6 +14,8 @@ PKG_RELEASE:=1
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=ftp://ftp.gnupg.org/gcrypt/libgpg-error
 PKG_HASH:=cafc9ed6a87c53a35175d5a1220a96ca386696eef2fa059cc0306211f246e55f
+PKG_LICENSE:=LGPL-2.1+
+PKG_LICENSE_FILES:=COPYING
 
 PKG_BUILD_PARALLEL:=1
 PKG_INSTALL:=1