Generate the uapi headers for mips and x86/x86_64.

Bug: 11559337
Change-Id: I23b1a43e7bfa8fa6f9df7e59d2e731a0ec52dafc
diff --git a/libc/kernel/uapi/asm-x86/asm/unistd.h b/libc/kernel/uapi/asm-x86/asm/unistd.h
new file mode 100644
index 0000000..39492d8
--- /dev/null
+++ b/libc/kernel/uapi/asm-x86/asm/unistd.h
@@ -0,0 +1,31 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_ASM_X86_UNISTD_H
+#define _UAPI_ASM_X86_UNISTD_H
+#define __X32_SYSCALL_BIT 0x40000000
+#ifdef __i386__
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#include <asm/unistd_32.h>
+#elif defined(__ILP32__)
+#include <asm/unistd_x32.h>
+#else
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#include <asm/unistd_64.h>
+#endif
+#endif