To avoid confusion and make it more obvious that the 'build' target
creates the build directory, append a slash at the end.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I49b4fef859f642cc03c0223cb1773597718e56cb
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87819
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
cba0f0b8b9