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/reset/reset-hsdk.c b/drivers/reset/reset-hsdk.c
index 149eaef..0c8f276 100644
--- a/drivers/reset/reset-hsdk.c
+++ b/drivers/reset/reset-hsdk.c
@@ -10,6 +10,7 @@
 #include <asm/io.h>
 #include <common.h>
 #include <dm.h>
+#include <linux/bitops.h>
 #include <linux/iopoll.h>
 #include <reset-uclass.h>