gst-plugins-ugly: add legal info

Even though COPYING is LGPLv2.1+ many code files state v2+

Signed-off-by: Gustavo Zacarias <gustavo.zacarias@free-electrons.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gstreamer/gst-plugins-ugly/gst-plugins-ugly.mk

@@ -7,6 +7,10 @@
 GST_PLUGINS_UGLY_VERSION = 0.10.19
 GST_PLUGINS_UGLY_SOURCE = gst-plugins-ugly-$(GST_PLUGINS_UGLY_VERSION).tar.xz
 GST_PLUGINS_UGLY_SITE = http://gstreamer.freedesktop.org/src/gst-plugins-ugly
+# COPYING is in fact LGPLv2.1, but all of the code is v2+
+# (except for one test, xingmux)
+GST_PLUGINS_UGLY_LICENSE = LGPLv2+, GPLv2+ (synaesthesia)
+GST_PLUGINS_UGLY_LICENSE_FILES = COPYING
 
 GST_PLUGINS_UGLY_CONF_OPTS = \
 	--disable-examples