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/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index f8d3f4d..2b7de6c 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -9,6 +9,7 @@
  */
 
 #ifndef __UBOOT__
+#include <log.h>
 #include <dm/devres.h>
 #include <linux/module.h>
 #include <linux/kernel.h>