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/clk/mediatek/clk-mt8518.c b/drivers/clk/mediatek/clk-mt8518.c
index 76f7b3b..985a0c1 100644
--- a/drivers/clk/mediatek/clk-mt8518.c
+++ b/drivers/clk/mediatek/clk-mt8518.c
@@ -10,6 +10,7 @@
 #include <dm.h>
 #include <asm/io.h>
 #include <dt-bindings/clock/mt8518-clk.h>
+#include <linux/bitops.h>
 
 #include "clk-mtk.h"