runtime: skip TestG0StackOverflow on Android

This test is skipped on Linux and should be skipped on Android for the
same reason.

Change-Id: I753c4788d935bd58874554b455c0d5be2315b794
Reviewed-on: https://go-review.googlesource.com/122585
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/runtime/crash_test.go

@@ -702,7 +702,7 @@ func TestG0StackOverflow(t *testing.T) {
 	testenv.MustHaveExec(t)
 
 	switch runtime.GOOS {
-	case "darwin", "dragonfly", "freebsd", "linux", "netbsd", "openbsd":
+	case "darwin", "dragonfly", "freebsd", "linux", "netbsd", "openbsd", "android":
 		t.Skipf("g0 stack is wrong on pthread platforms (see golang.org/issue/26061)")
 	}