mb/*/chromeos.c: Be explicit about code for ramstage

Motivation is to reduce use of !__PRE_RAM__, it does not
mean ENV_RAMSTAGE but we also exclude ENV_SMM with the change.

Change-Id: I1f96bb8c055a3da63274e1ab7f7d4bc70867cbf1
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31930
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

src/mainboard/google/jecht/chromeos.c

@@ -29,7 +29,7 @@
 #define FLAG_REC_MODE	1
 #define FLAG_DEV_MODE	2
 
-#ifndef __PRE_RAM__
+#if ENV_RAMSTAGE
 #include <boot/coreboot_tables.h>
 
 void fill_lb_gpios(struct lb_gpios *gpios)