common: Drop linux/bug.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c
index 0dc7886..41c7d56 100644
--- a/fs/ubifs/tnc.c
+++ b/fs/ubifs/tnc.c
@@ -25,6 +25,7 @@
 #include <linux/slab.h>
 #include <u-boot/crc.h>
 #else
+#include <linux/bug.h>
 #include <linux/compat.h>
 #include <linux/err.h>
 #include <linux/stat.h>