Makefile.inc: fix multiple jobs build issue

Certain C source files for coreboot stages require fmap_config.h to
be present. When building coreboot using multiple jobs the dependency
is not always satisfied due to race condition and results in make
error. Work around it by adding fmap_config.h to stage C deps.

Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: I3a70beedf2eb1c018c5ff98163904253f9a87a61
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69819
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Krystian Hebel <krystian.hebel@3mdeb.com>

0 files changed, 0 insertions, 0 deletions