CBMEM: Always select CAR_MIGRATION

If romstage does not make cbmem_initialize() call, linker should
optimize the code for CAR migration away.

This simplifies design of CBMEM console by a considerable amount.
As console buffer is now migrated within cbmem_initialize() call there
is no longer need for cbmemc_reinit() call made at end of romstage.

Change-Id: I8675ecaafb641fa02675e9ba3f374caa8e240f1d
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/3916
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
diff --git a/src/include/timestamp.h b/src/include/timestamp.h
index 0f56200..edc0076 100644
--- a/src/include/timestamp.h
+++ b/src/include/timestamp.h
@@ -59,13 +59,13 @@
 void timestamp_init(tsc_t base);
 void timestamp_add(enum timestamp_id id, tsc_t ts_time);
 void timestamp_add_now(enum timestamp_id id);
-void timestamp_sync(void);
+void timestamp_reinit(void);
 tsc_t get_initial_timestamp(void);
 #else
 #define timestamp_init(base)
 #define timestamp_add(id, time)
 #define timestamp_add_now(id)
-#define timestamp_sync()
+#define timestamp_reinit()
 #endif
 
 #endif