If KCONFIG_CONFIG is set to a full path, we should generate the tmp file
in the same directory instead of the current working directory.
BUG=b:112267918
TEST=emerge-grunt coreboot and verified with print statements that the
correct path was used.
Change-Id: Ia21e930a9b0a693f851c34bcde26b34886cbe902
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34243
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
d2f90a0659