Skip couple of Go tests on 32-bit SPARC

Since they are already skipped on other 32-bit architectures.

gcc/testsuite/
	* go.test/test/fixedbugs/issue6036.go: Skip on sparc.
	* go.test/test/fixedbugs/issue22200b.go: Likewise.

gcc/testsuite/go.test/test/fixedbugs/issue22200b.go

@@ -4,7 +4,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !386,!amd64p32,!arm,!mips,!mipsle
+// +build !386,!amd64p32,!arm,!mips,!mipsle,!sparc
 
 package p
 

gcc/testsuite/go.test/test/fixedbugs/issue6036.go

@@ -1,4 +1,4 @@
-// +build !386,!arm,!mips,!mipsle,!amd64p32
+// +build !386,!arm,!mips,!mipsle,!amd64p32,!sparc
 // compile
 
 // Copyright 2013 The Go Authors. All rights reserved.