common: Drop log.h from common header

Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/ddr/marvell/a38x/ddr3_debug.c b/drivers/ddr/marvell/a38x/ddr3_debug.c
index f5fc964..22e0cc4 100644
--- a/drivers/ddr/marvell/a38x/ddr3_debug.c
+++ b/drivers/ddr/marvell/a38x/ddr3_debug.c
@@ -6,6 +6,7 @@
 #include "ddr3_init.h"
 #include "mv_ddr_training_db.h"
 #include "mv_ddr_regs.h"
+#include <log.h>
 
 u8 is_reg_dump = 0;
 u8 debug_pbs = DEBUG_LEVEL_ERROR;