This will allow use to automagically set the SRCREV for builds on the
autobuilder. It will still require manual updating for releases.
(From OE-Core rev: ab6c778af4333387e742ddab4e690e43de63f204)
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>