Update siginfo_t constants

* xlat/sigbus_codes.in: Add BUS_MCEERR_AR and BUS_MCEERR_AO,
add default values.
* xlat/sigtrap_codes.in: Add TRAP_BRANCH and TRAP_HWBKPT,
add default values.
* xlat/sigsegv_codes.in: Add SEGV_BNDERR, add default values.
* xlat/sigchld_codes.in: Add default values.
* xlat/sigemt_codes.in: Likewise.
* xlat/sigfpe_codes.in: Likewise.
* xlat/sigill_codes.in: Likewise.
* xlat/siginfo_codes.in: Likewise.
* xlat/sigpoll_codes.in: Likewise.
* xlat/sigsys_codes.in: Likewise.
diff --git a/xlat/siginfo_codes.in b/xlat/siginfo_codes.in
index 115d3ab..a57c370 100644
--- a/xlat/siginfo_codes.in
+++ b/xlat/siginfo_codes.in
@@ -1,12 +1,12 @@
-SI_KERNEL
-SI_USER
-SI_QUEUE
-SI_TIMER
-SI_MESGQ
-SI_ASYNCIO
-SI_SIGIO
-SI_TKILL
-SI_DETHREAD
-SI_ASYNCNL
+SI_USER 0
+SI_KERNEL 0x80
+SI_QUEUE -1
+SI_TIMER -2
+SI_MESGQ -3
+SI_ASYNCIO -4
+SI_SIGIO -5
+SI_TKILL -6
+SI_DETHREAD -7
+SI_ASYNCNL -60
 SI_NOINFO
 SI_LWP