glib.idle_add is used so the glib module must be imported
Fixes [YOCTO #1248]
(Bitbake rev: 0ab099f6ff4cc4e92484282d2dee442e55471e0c)
Signed-off-by: Joshua Lock <josh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>