src/mainboard/{cavium,sifive}: Use $(obj) instead of build

The build directory might not exist in the src dir.

BUG=b:112267918
TEST=make what-jenkins-does

Change-Id: I2d4fa6cc455592f92070796cd065cd66646d5ba9
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34552
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

0 files changed, 0 insertions, 0 deletions