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/net/mscc_eswitch/mscc_xfer.c b/drivers/net/mscc_eswitch/mscc_xfer.c
index 01eb204..6f74746 100644
--- a/drivers/net/mscc_eswitch/mscc_xfer.c
+++ b/drivers/net/mscc_eswitch/mscc_xfer.c
@@ -4,6 +4,7 @@
  */
 
 #include <log.h>
+#include <linux/bitops.h>
 #include <linux/delay.h>
 #include <linux/io.h>
 #include "mscc_xfer.h"