common: Drop linux/bitops.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/super.c b/fs/ubifs/super.c
index 2f6b25d..e3a4c0b 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -32,6 +32,7 @@
 #include <common.h>
 #include <malloc.h>
 #include <memalign.h>
+#include <linux/bitops.h>
 #include <linux/bug.h>
 #include <linux/log2.h>
 #include <linux/stat.h>