soc/intel/{baytrail,broadwell}: Correct Chromeos RAM reservation

RAM is reserved for Chromeos even when Chrome is not used.
Use CONFIG_CHROMEOS to determine is RAM must be reserved.

BUG=N/A
TEST=Intel BayTrail CRB

Change-Id: Ic1f5089227f802e2b2f62dc02fa0d1648c1855b5
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/29856
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
diff --git a/src/soc/intel/broadwell/systemagent.c b/src/soc/intel/broadwell/systemagent.c
index 7147750..8013979 100644
--- a/src/soc/intel/broadwell/systemagent.c
+++ b/src/soc/intel/broadwell/systemagent.c
@@ -372,7 +372,8 @@
 	reserved_ram_resource(dev, index++, (0xc0000 >> 10),
 				(0x100000 - 0xc0000) >> 10);
 
-	chromeos_reserve_ram_oops(dev, index++);
+	if (IS_ENABLED(CONFIG_CHROMEOS))
+		chromeos_reserve_ram_oops(dev, index++);
 
 	*resource_cnt = index;
 }