test: enable fixedbugs/issue10607 test on GOARCH=mips{,le}

Change-Id: I00c97c36e8fdc79582eaed21877e4c8f44568666
Reviewed-on: https://go-review.googlesource.com/34316Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

test/fixedbugs/issue10607.go

-// +build linux,!mips,!mipsle,!ppc64
+// +build linux,!ppc64
 // run
 
 // Copyright 2015 The Go Authors. All rights reserved.