Small change to help arch's without processor affinity
diff --git a/device-cpu.c b/device-cpu.c
index c99cdfb..4cc01a8 100644
--- a/device-cpu.c
+++ b/device-cpu.c
@@ -39,7 +39,7 @@
#include <fcntl.h>
#endif
-#ifdef __linux /* Linux specific policy and affinity management */
+#if defined(__linux) && defined(cpu_set_t) /* Linux specific policy and affinity management */
#include <sched.h>
static inline void drop_policy(void)
{