nb/intel/gm45: Add romstage timestamps

Change-Id: I558e6c63caf95ec5279ec5a866b54fb199116469
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/19678
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

src/northbridge/intel/gm45/raminit.c

@@ -25,6 +25,7 @@
 #include <console/console.h>
 #include <lib.h>
 #include <delay.h>
+#include <timestamp.h>
 #include "gm45.h"
 #include "chip.h"
 
@@ -1713,6 +1714,7 @@ void raminit(sysinfo_t *const sysinfo, const int s3resume)
 	int ch;
 	u8 reg8;
 
+	timestamp_add_now(TS_BEFORE_INITRAM);
 
 	/* Wait for some bit, maybe TXT clear. */
 	if (sysinfo->txt_enabled) {
@@ -1825,4 +1827,6 @@ void raminit(sysinfo_t *const sysinfo, const int s3resume)
 
 	raminit_thermal(sysinfo);
 	init_igd(sysinfo);
+
+	timestamp_add_now(TS_AFTER_INITRAM);
 }