Update PTRACE_* constants

* ptrace.h (PTRACE_SECCOMP_GET_FILTER): Define.
* xlat/ptrace_cmds.in: Add PTRACE_SECCOMP_GET_FILTER.
diff --git a/ptrace.h b/ptrace.h
index d8af976..2e7d5e3 100644
--- a/ptrace.h
+++ b/ptrace.h
@@ -5,7 +5,7 @@
  * Copyright (c) 2004 Roland McGrath <roland@redhat.com>
  * Copyright (c) 2010 Wang Chao <wang.chao@cn.fujitsu.com>
  * Copyright (c) 2011-2013 Denys Vlasenko <vda.linux@googlemail.com>
- * Copyright (c) 2011-2015 Dmitry V. Levin <ldv@altlinux.org>
+ * Copyright (c) 2011-2016 Dmitry V. Levin <ldv@altlinux.org>
  * Copyright (c) 2013 Ali Polatel <alip@exherbo.org>
  * Copyright (c) 2015 Mike Frysinger <vapier@gentoo.org>
  * All rights reserved.
@@ -162,6 +162,9 @@
 #ifndef PTRACE_SETSIGMASK
 # define PTRACE_SETSIGMASK	0x420b
 #endif
+#ifndef PTRACE_SECCOMP_GET_FILTER
+# define PTRACE_SECCOMP_GET_FILTER	0x420c
+#endif
 
 #if !HAVE_DECL_PTRACE_PEEKUSER
 # define PTRACE_PEEKUSER PTRACE_PEEKUSR
diff --git a/xlat/ptrace_cmds.in b/xlat/ptrace_cmds.in
index 257420b..5e4da83 100644
--- a/xlat/ptrace_cmds.in
+++ b/xlat/ptrace_cmds.in
@@ -32,6 +32,7 @@
 PTRACE_PEEKSIGINFO
 PTRACE_GETSIGMASK
 PTRACE_SETSIGMASK
+PTRACE_SECCOMP_GET_FILTER
 /* arch-specific */
 PTRACE_GET_THREAD_AREA
 PTRACE_SET_THREAD_AREA