Makefile.inc: Use 'Wold-style-definition'

Warn when a definition is using '()' instead of '(void)'.
Use of ‘()’ is considered an old-style definition in C1x standards,
but probably not in C2x.

Change-Id: I734cfffe3e89996ab13e846cc08e13753f24f742
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70205
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

0 files changed, 0 insertions, 0 deletions