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/drivers/core/ofnode.c b/drivers/core/ofnode.c
index e3c42da..c37afa1 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -8,6 +8,7 @@
 #include <dm.h>
 #include <fdtdec.h>
 #include <fdt_support.h>
+#include <log.h>
 #include <malloc.h>
 #include <linux/libfdt.h>
 #include <dm/of_access.h>