dbus: update legal info

Library and some tools (dbus-lanuch, dbus-run-session) are dual
licensed under GPLv2 or AFLv2.1 and others (dbus-monitor, dbus-send,
dbus-cleanup-sockets, dbus-uuidgen) are licensed under GPLv2+
only.

Reviewed-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/dbus/dbus.mk

@@ -6,7 +6,7 @@
 
 DBUS_VERSION = 1.10.8
 DBUS_SITE = http://dbus.freedesktop.org/releases/dbus
-DBUS_LICENSE = AFLv2.1, GPLv2+
+DBUS_LICENSE = AFLv2.1 or GPLv2+ (library, tools), GPLv2+ (tools)
 DBUS_LICENSE_FILES = COPYING
 DBUS_INSTALL_STAGING = YES