package/taglib: add license hash

Partly fixes:
http://autobuild.buildroot.net/results/f0f/f0fd05ce8a8b595015baf625481b58967df53458/

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/taglib/taglib.hash

@@ -1,2 +1,4 @@
 # Locally calculated
 sha256 b6d1a5a610aae6ff39d93de5efd0fdc787aa9e9dc1e7026fa4c961b26563526b  taglib-1.11.1.tar.gz
+sha256 dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING.LGPL
+sha256 53692a2ed6c6a2c6ec9b32dd0b820dfae91e0a1fcdf625ca9ed0bdf8705fcc4f  COPYING.MPL