Add sync_file_range to <fcntl.h>.

Bug: http://b/27952303
Change-Id: Idadfacd657ed415abc11684b9471e4e24c2fbf05
diff --git a/libc/arch-mips/syscalls/__sync_file_range.S b/libc/arch-mips/syscalls/__sync_file_range.S
new file mode 100644
index 0000000..79d41e0
--- /dev/null
+++ b/libc/arch-mips/syscalls/__sync_file_range.S
@@ -0,0 +1,19 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(__sync_file_range)
+    .set noreorder
+    .cpload t9
+    li v0, __NR_sync_file_range
+    syscall
+    bnez a3, 1f
+    move a0, v0
+    j ra
+    nop
+1:
+    la t9,__set_errno_internal
+    j t9
+    nop
+    .set reorder
+END(__sync_file_range)