sched: Move Cygwin cpuset definitions into Cygwin-specific header

This avoids build breakage on RTEMS.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

winsup/cygwin/include/sys/cpuset.h

@@ -0,0 +1,25 @@
+/* sys/cpuset.h
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#ifndef _SYS_CPUSET_H_
+#define _SYS_CPUSET_H_
+
+typedef __SIZE_TYPE__ __cpu_mask;
+#define __CPU_SETSIZE 1024  // maximum number of logical processors tracked
+#define __NCPUBITS (8 * sizeof (__cpu_mask))  // max size of processor group
+#define __CPU_GROUPMAX (__CPU_SETSIZE / __NCPUBITS)  // maximum group number
+
+#define __CPUELT(cpu)   ((cpu) / __NCPUBITS)
+#define __CPUMASK(cpu)  ((__cpu_mask) 1 << ((cpu) % __NCPUBITS))
+
+typedef struct
+{
+  __cpu_mask __bits[__CPU_GROUPMAX];
+} cpu_set_t;
+
+#endif /* _SYS_CPUSET_H_ */