google/oak: Add timestamps in romstage

BUG=none
TEST=emerge-oak coreboot
BRANCH=none

Change-Id: Idf74265c9c1ab3a1a74fd18dfd289fccad25177e
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 569c433886b19cd08d168e995bf34156c2ba6963
Original-Change-Id: I07fda6a0719d49e2c07249276ae2cc0b57fdfeda
Original-Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/292660
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/12610
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/oak/romstage.c

@@ -27,9 +27,12 @@
 #include <program_loading.h>
 #include <romstage_handoff.h>
 #include <symbols.h>
+#include <timestamp.h>
 
 void main(void)
 {
+	timestamp_add_now(TS_START_ROMSTAGE);
+
 	/* init uart baudrate when pll on */
 	console_init();
 	exception_init();