Create a new global blob_lock mutex, which protects the blob property
list from insertion and/or deletion.
Signed-off-by: NDaniel Stone <daniels@collabora.com>
Reviewed-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>