Revision 4388

let abuild autodetect the coreboot path a bit better. So in the top level of
coreboot you can now do:
  $ util/abuild/abuild -t foo/bar
instead of
  $ util/abuild/abuild -t foo/bar $PWD

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>