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/mpc8569mds/mpc8569mds.c b/board/freescale/mpc8569mds/mpc8569mds.c
index 18e0d87..762b0c1 100644
--- a/board/freescale/mpc8569mds/mpc8569mds.c
+++ b/board/freescale/mpc8569mds/mpc8569mds.c
@@ -10,6 +10,7 @@
 #include <flash.h>
 #include <hwconfig.h>
 #include <init.h>
+#include <log.h>
 #include <pci.h>
 #include <asm/processor.h>
 #include <asm/mmu.h>