Setting async to false will lead A/V sync problem when seeking.
The preroll need to use GAP event instead of setting async to false.
(From OE-Core rev: c3ed0c2162dcdbb1aced57aed33e2791b81db558)
Signed-off-by: Yuqing Zhu <b54851@freescale.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>