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/cmd/bcb.c b/cmd/bcb.c
index d99a698..e032180 100644
--- a/cmd/bcb.c
+++ b/cmd/bcb.c
@@ -8,6 +8,7 @@
 #include <android_bootloader_message.h>
 #include <command.h>
 #include <common.h>
+#include <log.h>
 #include <part.h>
 
 enum bcb_cmd {