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/mach-socfpga/include/mach/system_manager.h b/arch/arm/mach-socfpga/include/mach/system_manager.h
index 6de0a08..f816954 100644
--- a/arch/arm/mach-socfpga/include/mach/system_manager.h
+++ b/arch/arm/mach-socfpga/include/mach/system_manager.h
@@ -94,5 +94,6 @@
 
 #define SYSMGR_GET_BOOTINFO_BSEL(bsel)		\
 		(((bsel) >> SYSMGR_BOOTINFO_BSEL_SHIFT) & 7)
+#include <linux/bitops.h>
 #endif
 #endif /* _SYSTEM_MANAGER_H_ */