build system: make CONFIG_* symbols disappear from objects

We don't actually want to see them in the binaries.

Change-Id: I37b53ef7dcbe05d81a8322d528c9aae102115134
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/9180
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
1 file changed