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/drivers/usb/cdns3/gadget.h b/drivers/usb/cdns3/gadget.h
index 3d5242b..8803fa4 100644
--- a/drivers/usb/cdns3/gadget.h
+++ b/drivers/usb/cdns3/gadget.h
@@ -11,6 +11,7 @@
  */
 #ifndef __LINUX_CDNS3_GADGET
 #define __LINUX_CDNS3_GADGET
+#include <linux/bitops.h>
 #include <linux/usb/gadget.h>
 
 /*