tree 6711f84820764224551d9dfec174251c5c94ff0a
parent 01cd78854afe5707f0d5b2b8418de07a55f8fde4
author jiaguo <jiaguo@marvell.com> 1394703598 +0800
committer Elliott Hughes <enh@google.com> 1394739772 -0700

property: fix getting dirty serial value

__system_property_serial just returned serial value without
checking if it is dirty, so check and wait until serial
value is not dirty before return

Change-Id: If485b6251b5555b004912c66c7c2cb455a7fdbdc
Signed-off-by: jiaguo <jiaguo@marvell.com>