Update to v4.15 kernel headers.

Test: Compiles, boots bullhead/hikey960.
Change-Id: I118beb8b6cac0881b1270f9bf6981959297a41a8
diff --git a/libc/kernel/uapi/linux/vm_sockets_diag.h b/libc/kernel/uapi/linux/vm_sockets_diag.h
new file mode 100644
index 0000000..2f9840b
--- /dev/null
+++ b/libc/kernel/uapi/linux/vm_sockets_diag.h
@@ -0,0 +1,43 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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__VM_SOCKETS_DIAG_H__
+#define _UAPI__VM_SOCKETS_DIAG_H__
+#include <linux/types.h>
+struct vsock_diag_req {
+  __u8 sdiag_family;
+  __u8 sdiag_protocol;
+  __u16 pad;
+  __u32 vdiag_states;
+  __u32 vdiag_ino;
+  __u32 vdiag_show;
+  __u32 vdiag_cookie[2];
+};
+struct vsock_diag_msg {
+  __u8 vdiag_family;
+  __u8 vdiag_type;
+  __u8 vdiag_state;
+  __u8 vdiag_shutdown;
+  __u32 vdiag_src_cid;
+  __u32 vdiag_src_port;
+  __u32 vdiag_dst_cid;
+  __u32 vdiag_dst_port;
+  __u32 vdiag_ino;
+  __u32 vdiag_cookie[2];
+};
+#endif