modem-manager: add COPYING.LIB to LICENSE_FILES

ModemManager and mmcli are GPLv2+ (COPYING file applies) and
libmm-glib is LGPLv2.1+ (COPYING.LIB file applies).

Also, setup hashes of the license files, for a correct
"make legal-info".

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/modem-manager/modem-manager.hash

@@ -1,2 +1,4 @@
 # Locally computed
 sha256  ffc035c4bfeb07780c4580bb4488ade0ab1d197c3cdf89cb8ab36386cfb34376  ModemManager-1.6.8.tar.xz
+sha256  8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  COPYING
+sha256  dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING.LIB

package/modem-manager/modem-manager.mk

@@ -8,7 +8,7 @@ MODEM_MANAGER_VERSION = 1.6.8
 MODEM_MANAGER_SOURCE = ModemManager-$(MODEM_MANAGER_VERSION).tar.xz
 MODEM_MANAGER_SITE = http://www.freedesktop.org/software/ModemManager
 MODEM_MANAGER_LICENSE = GPL-2.0+ (programs, plugins), LGPL-2.0+ (libmm-glib)
-MODEM_MANAGER_LICENSE_FILES = COPYING
+MODEM_MANAGER_LICENSE_FILES = COPYING COPYING.LIB
 MODEM_MANAGER_DEPENDENCIES = host-pkgconf host-intltool libglib2 libgudev
 MODEM_MANAGER_INSTALL_STAGING = YES