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/mscc/ocelot/ocelot.c b/board/mscc/ocelot/ocelot.c
index 5fbd8fc..a534536 100644
--- a/board/mscc/ocelot/ocelot.c
+++ b/board/mscc/ocelot/ocelot.c
@@ -6,6 +6,7 @@
 #include <common.h>
 #include <image.h>
 #include <init.h>
+#include <log.h>
 #include <asm/io.h>
 #include <asm/addrspace.h>
 #include <asm/types.h>