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.c b/drivers/usb/cdns3/gadget.c
index f5b6e5b..8f81d17 100644
--- a/drivers/usb/cdns3/gadget.c
+++ b/drivers/usb/cdns3/gadget.c
@@ -59,6 +59,7 @@
 #include <dm.h>
 #include <dm/device_compat.h>
 #include <dm/devres.h>
+#include <linux/bitops.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/usb/gadget.h>