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/armltd/integrator/pci.c b/board/armltd/integrator/pci.c
index c189d23..e3793c1 100644
--- a/board/armltd/integrator/pci.c
+++ b/board/armltd/integrator/pci.c
@@ -21,6 +21,7 @@
  */
 #include <common.h>
 #include <init.h>
+#include <log.h>
 #include <pci.h>
 #include <asm/io.h>
 #include "integrator-sc.h"