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/arch/arm/include/asm/arch-tegra124/flow.h b/arch/arm/include/asm/arch-tegra124/flow.h
index 62947bf..ebcb22f 100644
--- a/arch/arm/include/asm/arch-tegra124/flow.h
+++ b/arch/arm/include/asm/arch-tegra124/flow.h
@@ -7,6 +7,10 @@
 #ifndef _TEGRA124_FLOW_H_
 #define _TEGRA124_FLOW_H_
 
+#ifndef __ASSEMBLY__
+#include <linux/bitops.h>
+#endif
+
 struct flow_ctlr {
 	u32 halt_cpu_events;	/* offset 0x00 */
 	u32 halt_cop_events;	/* offset 0x04 */