cmd/dist: enable extLink tests for mips{,le}

Change-Id: I9e37aece5ace374e89bee70962a19f76ae3266bc
Reviewed-on: https://go-review.googlesource.com/34646
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/cmd/dist/test.go

@@ -704,7 +704,7 @@ func (t *tester) extLink() bool {
 		"darwin-arm", "darwin-arm64",
 		"dragonfly-386", "dragonfly-amd64",
 		"freebsd-386", "freebsd-amd64", "freebsd-arm",
-		"linux-386", "linux-amd64", "linux-arm", "linux-arm64", "linux-ppc64le", "linux-mips64", "linux-mips64le",
+		"linux-386", "linux-amd64", "linux-arm", "linux-arm64", "linux-ppc64le", "linux-mips64", "linux-mips64le", "linux-mips", "linux-mipsle",
 		"netbsd-386", "netbsd-amd64",
 		"openbsd-386", "openbsd-amd64",
 		"windows-386", "windows-amd64":