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/pinctrl/renesas/pfc-r7s72100.c b/drivers/pinctrl/renesas/pfc-r7s72100.c
index 7e4530d..5055780 100644
--- a/drivers/pinctrl/renesas/pfc-r7s72100.c
+++ b/drivers/pinctrl/renesas/pfc-r7s72100.c
@@ -9,6 +9,7 @@
 #include <dm.h>
 #include <dm/lists.h>
 #include <dm/pinctrl.h>
+#include <linux/bitops.h>
 #include <linux/io.h>
 #include <linux/err.h>