soc/intel: Use common romstage code

This provides stack guards with checking and common
entry into postcar.

The code in cpu/intel/car/romstage.c is candidate
for becoming architectural so function prototype
is moved to <arch/romstage.h>.

Change-Id: I4c5a9789e7cf3f7f49a4a33e21dac894320a9639
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34893
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/asus/p2b-ds/romstage.c b/src/mainboard/asus/p2b-ds/romstage.c
index a93c0ed..5b3a30b 100644
--- a/src/mainboard/asus/p2b-ds/romstage.c
+++ b/src/mainboard/asus/p2b-ds/romstage.c
@@ -18,7 +18,7 @@
 #include <console/console.h>
 #include <southbridge/intel/i82371eb/i82371eb.h>
 #include <northbridge/intel/i440bx/raminit.h>
-#include <cpu/intel/romstage.h>
+#include <arch/romstage.h>
 #include <superio/winbond/common/winbond.h>
 #include <superio/winbond/w83977tf/w83977tf.h>
 #include <cbmem.h>
diff --git a/src/mainboard/asus/p2b-ls/romstage.c b/src/mainboard/asus/p2b-ls/romstage.c
index e77e3dc..f933c77 100644
--- a/src/mainboard/asus/p2b-ls/romstage.c
+++ b/src/mainboard/asus/p2b-ls/romstage.c
@@ -18,7 +18,7 @@
 #include <console/console.h>
 #include <southbridge/intel/i82371eb/i82371eb.h>
 #include <northbridge/intel/i440bx/raminit.h>
-#include <cpu/intel/romstage.h>
+#include <arch/romstage.h>
 #include <superio/winbond/common/winbond.h>
 /* FIXME: The ASUS P2B-LS has a Winbond W83977EF, actually. */
 #include <superio/winbond/w83977tf/w83977tf.h>
diff --git a/src/mainboard/asus/p2b/romstage.c b/src/mainboard/asus/p2b/romstage.c
index b517429..1d7c928 100644
--- a/src/mainboard/asus/p2b/romstage.c
+++ b/src/mainboard/asus/p2b/romstage.c
@@ -18,7 +18,7 @@
 #include <console/console.h>
 #include <southbridge/intel/i82371eb/i82371eb.h>
 #include <northbridge/intel/i440bx/raminit.h>
-#include <cpu/intel/romstage.h>
+#include <arch/romstage.h>
 #include <superio/winbond/common/winbond.h>
 #include <superio/winbond/w83977tf/w83977tf.h>
 #include <cbmem.h>
diff --git a/src/mainboard/asus/p3b-f/romstage.c b/src/mainboard/asus/p3b-f/romstage.c
index cc5b764..8fc135d 100644
--- a/src/mainboard/asus/p3b-f/romstage.c
+++ b/src/mainboard/asus/p3b-f/romstage.c
@@ -19,7 +19,7 @@
 #include <console/console.h>
 #include <southbridge/intel/i82371eb/i82371eb.h>
 #include <northbridge/intel/i440bx/raminit.h>
-#include <cpu/intel/romstage.h>
+#include <arch/romstage.h>
 #include <superio/winbond/common/winbond.h>
 /* FIXME: The ASUS P3B-F has a Winbond W83977EF, actually. */
 #include <superio/winbond/w83977tf/w83977tf.h>
diff --git a/src/mainboard/asus/p5gc-mx/romstage.c b/src/mainboard/asus/p5gc-mx/romstage.c
index c3275b5..632ef0557 100644
--- a/src/mainboard/asus/p5gc-mx/romstage.c
+++ b/src/mainboard/asus/p5gc-mx/romstage.c
@@ -24,7 +24,7 @@
 #include <superio/winbond/common/winbond.h>
 #include <superio/winbond/w83627dhg/w83627dhg.h>
 #include <console/console.h>
-#include <cpu/intel/romstage.h>
+#include <arch/romstage.h>
 #include <northbridge/intel/i945/i945.h>
 #include <northbridge/intel/i945/raminit.h>
 #include <southbridge/intel/i82801gx/i82801gx.h>
diff --git a/src/mainboard/asus/p5qc/romstage.c b/src/mainboard/asus/p5qc/romstage.c
index 8af04e3..1477d80 100644
--- a/src/mainboard/asus/p5qc/romstage.c
+++ b/src/mainboard/asus/p5qc/romstage.c
@@ -20,7 +20,7 @@
 #include <southbridge/intel/common/gpio.h>
 #include <southbridge/intel/common/pmclib.h>
 #include <northbridge/intel/x4x/x4x.h>
-#include <cpu/intel/romstage.h>
+#include <arch/romstage.h>
 #include <superio/winbond/w83667hg-a/w83667hg-a.h>
 #include <superio/winbond/common/winbond.h>
 #include <northbridge/intel/x4x/iomap.h>
diff --git a/src/mainboard/asus/p5qpl-am/romstage.c b/src/mainboard/asus/p5qpl-am/romstage.c
index f15a187..dc589a5 100644
--- a/src/mainboard/asus/p5qpl-am/romstage.c
+++ b/src/mainboard/asus/p5qpl-am/romstage.c
@@ -19,7 +19,7 @@
 #include <device/pnp_ops.h>
 #include <device/pci_ops.h>
 #include <console/console.h>
-#include <cpu/intel/romstage.h>
+#include <arch/romstage.h>
 #include <cpu/intel/speedstep.h>
 #include <cpu/x86/msr.h>
 #include <northbridge/intel/x4x/iomap.h>