Change semantics of image building in the layout code

If a layout file was specified, all regions not mentioned in the layout
file were taken from the new image instead of being preserved.
If regions overlap, the non-included regions won.

New behaviour:
If a layout file is specified, only the regions explicitly requested for
inclusion will be taken from the new image.
If regions overlap, the included regions win.

Corresponding to flashrom svn r1223.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: David Hendricks <dhendrix@google.com>
1 file changed