CL 84555 added support for the SuperH architecture, but didn't add the
randomTrap definition to be used for the getrandom syscall on Linux.
Add it now.
Reviewed-on: https://go-review.googlesource.com/90535
From-SVN: r257171
-6517e6731aeb4512d12c341c7111959a44547ba0
+bbce8a9af264b25c5f70bafb2ce95d4fed158d68
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.
--- /dev/null
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build sh shbe
+
+package unix
+
+// Linux getrandom system call number.
+// See GetRandom in getrandom_linux.go.
+const randomTrap uintptr = 373