mainboard/*/romstage.c: Sanitize system header inclusions

Fix system include paths to be consistent. Chipset support is
part of the Coreboot 'system' and hence 'non-local' (i.e., in
the same directory or context). One possible product of this, is
to perhaps allow future work to do pre-compiled headers (PCH) on
the buildbot for faster build times. However, this currently just
makes mainboard's consistent.

Change-Id: I2f3fd8a3d7864926461c960ca619bff635d7dea5
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/8085
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
diff --git a/src/mainboard/lippert/roadrunner-lx/romstage.c b/src/mainboard/lippert/roadrunner-lx/romstage.c
index 4d8a6fd..dc503ed 100644
--- a/src/mainboard/lippert/roadrunner-lx/romstage.c
+++ b/src/mainboard/lippert/roadrunner-lx/romstage.c
@@ -27,16 +27,16 @@
 #include <arch/io.h>
 #include <device/pnp_def.h>
 #include <console/console.h>
-#include "cpu/x86/bist.h"
-#include "cpu/x86/msr.h"
+#include <cpu/x86/bist.h>
+#include <cpu/x86/msr.h>
 #include <cpu/amd/lxdef.h>
-#include "southbridge/amd/cs5536/cs5536.h"
+#include <southbridge/amd/cs5536/cs5536.h>
 #include <spd.h>
 #include "southbridge/amd/cs5536/early_smbus.c"
 #include "southbridge/amd/cs5536/early_setup.c"
 #include <superio/ite/common/ite.h>
 #include <superio/ite/it8712f/it8712f.h>
-#include "northbridge/amd/lx/raminit.h"
+#include <northbridge/amd/lx/raminit.h>
 
 #define SERIAL_DEV PNP_DEV(0x2e, IT8712F_SP1)
 #define GPIO_DEV PNP_DEV(0x2e, IT8712F_GPIO)