golang.org/x/sys/cpu: define doinit when needed
Should fix the build on riscv64 and other systems.
Change-Id: I4fd124e184627d80adbb9ac9dabae1169697cab4
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/194641
Reviewed-by: Cherry Zhang <cherryyz@google.com>
diff --git a/libgo/go/golang.org/x/sys/cpu/cpu_linux_other.go b/libgo/go/golang.org/x/sys/cpu/cpu_linux_other.go
new file mode 100644
index 0000000..6e8f9fe
--- /dev/null
+++ b/libgo/go/golang.org/x/sys/cpu/cpu_linux_other.go
@@ -0,0 +1,9 @@
+// Copyright 2019 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 !amd64,!amd64p32,!386,!arm64,!ppc64,!ppc64le,!s390x
+
+package cpu
+
+func doinit() {}
