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/board/freescale/ls2080ardb/ddr.c b/board/freescale/ls2080ardb/ddr.c
index 72ce872..4571a22 100644
--- a/board/freescale/ls2080ardb/ddr.c
+++ b/board/freescale/ls2080ardb/ddr.c
@@ -6,6 +6,7 @@
 #include <common.h>
 #include <fsl_ddr_sdram.h>
 #include <fsl_ddr_dimm_params.h>
+#include <log.h>
 #include <asm/arch/soc.h>
 #include <asm/arch/clock.h>
 #include "ddr.h"