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/rockchip/clk_rk3399.c b/drivers/clk/rockchip/clk_rk3399.c
index 2c58814..e009f1c 100644
--- a/drivers/clk/rockchip/clk_rk3399.c
+++ b/drivers/clk/rockchip/clk_rk3399.c
@@ -20,6 +20,7 @@
 #include <asm/arch-rockchip/hardware.h>
 #include <dm/lists.h>
 #include <dt-bindings/clock/rk3399-cru.h>
+#include <linux/bitops.h>
 #include <linux/delay.h>
 
 #if CONFIG_IS_ENABLED(OF_PLATDATA)