Update PTRACE_* constants

* xlat/ptrace_cmds.in: Add PTRACE_PEEKSIGINFO, PTRACE_GETSIGMASK,
and PTRACE_SETSIGMASK.
diff --git a/xlat/ptrace_cmds.in b/xlat/ptrace_cmds.in
index bf11ea4..9408c15 100644
--- a/xlat/ptrace_cmds.in
+++ b/xlat/ptrace_cmds.in
@@ -10,6 +10,7 @@
 PTRACE_SINGLESTEP
 PTRACE_ATTACH
 PTRACE_DETACH
+PTRACE_SYSCALL
 PTRACE_GETREGS
 PTRACE_SETREGS
 PTRACE_GETFPREGS
@@ -28,4 +29,6 @@
 PTRACE_SEIZE
 PTRACE_INTERRUPT
 PTRACE_LISTEN
-PTRACE_SYSCALL
+PTRACE_PEEKSIGINFO
+PTRACE_GETSIGMASK
+PTRACE_SETSIGMASK