google/nyan: remove timestamp leftovers from upstreaming

Initializing timestamps and writing the "start romstage" timestamp already
happens earlier.
One question to sort out is what to do about the migration into cbmem, but at
least this compiles again.

Change-Id: Ie8a0b7998c6c9da71f036857987f3c781385034f
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10729
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/nyan/romstage.c

@@ -83,11 +83,9 @@ static void __attribute__((noinline)) romstage(void)
 		hard_reset();
 	}
 
+	/* FIXME: this may require coordination with moving timestamps */
 	cbmem_initialize_empty();
 
-	timestamp_init(0);
-	timestamp_add(TS_START_ROMSTAGE, romstage_start_time);
-
 	early_mainboard_init();
 
 	run_ramstage();

src/mainboard/google/nyan_big/romstage.c

@@ -83,11 +83,9 @@ static void __attribute__((noinline)) romstage(void)
 		hard_reset();
 	}
 
+	/* FIXME: this may require coordination with moving timestamps */
 	cbmem_initialize_empty();
 
-	timestamp_init(0);
-	timestamp_add(TS_START_ROMSTAGE, romstage_start_time);
-
 	early_mainboard_init();
 
 	run_ramstage();

src/mainboard/google/nyan_blaze/romstage.c

@@ -87,11 +87,9 @@ static void __attribute__((noinline)) romstage(void)
 		hard_reset();
 	}
 
+	/* FIXME: this may require coordination with moving timestamps */
 	cbmem_initialize_empty();
 
-	timestamp_init(0);
-	timestamp_add(TS_START_ROMSTAGE, romstage_start_time);
-
 	early_mainboard_init();
 
 	run_ramstage();