<sched.h>: Add sched_getcpu() and cpu_set_t

This adds the cpu_set_t type definition and related functions
and macros used to handle CPU thread affinity.

  sched_getcpu()
  sched_setaffinity()
  sched_getaffinity()

Change-Id: If382ecafde8926341a88478062b275553645065b
diff --git a/libc/arch-arm/syscalls/__getcpu.S b/libc/arch-arm/syscalls/__getcpu.S
new file mode 100644
index 0000000..ed6927a
--- /dev/null
+++ b/libc/arch-arm/syscalls/__getcpu.S
@@ -0,0 +1,19 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+    .text
+    .type __getcpu, #function
+    .globl __getcpu
+    .align 4
+    .fnstart
+
+__getcpu:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
+    ldr     r7, =__NR_getcpu
+    swi     #0
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend
diff --git a/libc/arch-arm/syscalls/__sched_getaffinity.S b/libc/arch-arm/syscalls/__sched_getaffinity.S
new file mode 100644
index 0000000..71f2b1d
--- /dev/null
+++ b/libc/arch-arm/syscalls/__sched_getaffinity.S
@@ -0,0 +1,19 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+    .text
+    .type __sched_getaffinity, #function
+    .globl __sched_getaffinity
+    .align 4
+    .fnstart
+
+__sched_getaffinity:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
+    ldr     r7, =__NR_sched_getaffinity
+    swi     #0
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend
diff --git a/libc/arch-arm/syscalls/sched_setaffinity.S b/libc/arch-arm/syscalls/sched_setaffinity.S
new file mode 100644
index 0000000..aedf8f3
--- /dev/null
+++ b/libc/arch-arm/syscalls/sched_setaffinity.S
@@ -0,0 +1,19 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+    .text
+    .type sched_setaffinity, #function
+    .globl sched_setaffinity
+    .align 4
+    .fnstart
+
+sched_setaffinity:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
+    ldr     r7, =__NR_sched_setaffinity
+    swi     #0
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend