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/fsl/ddr3_dimm_params.c b/drivers/ddr/fsl/ddr3_dimm_params.c
index 47b4d76..8464438 100644
--- a/drivers/ddr/fsl/ddr3_dimm_params.c
+++ b/drivers/ddr/fsl/ddr3_dimm_params.c
@@ -10,6 +10,7 @@
 
 #include <common.h>
 #include <fsl_ddr_sdram.h>
+#include <log.h>
 
 #include <fsl_ddr.h>