mxml: add license information

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Luca Ceresoli <luca@lucaceresoli.net>

package/mxml/mxml.mk

@@ -5,6 +5,8 @@
 #############################################################
 MXML_VERSION = 2.7
 MXML_SITE = http://ftp.easysw.com/pub/mxml/$(MXML_VERSION)
+MXML_LICENSE = LGPLv2+ with exceptions
+MXML_LICENSE_FILES = COPYING
 MXML_INSTALL_STAGING = YES
 
 MXML_INSTALL_STAGING_OPT = DSTROOT=$(STAGING_DIR) install