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/samsung/odroid/odroid.c b/board/samsung/odroid/odroid.c
index 9aa97f0..7d7e722 100644
--- a/board/samsung/odroid/odroid.c
+++ b/board/samsung/odroid/odroid.c
@@ -5,6 +5,7 @@
  */
 
 #include <common.h>
+#include <log.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/power.h>
 #include <asm/arch/clock.h>