Failures on Fedora-ppc64be-native-gdbserver-m64, branch master

[sergiodj+buildbot@sergiodj.net]

Buildslave:
	fedora-ppc64be-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-ppc64be-native-gdbserver-m64/builds/5161>

Commit(s) tested:
	25dcbff6ef0088e080d92b3cbc346ae0b5071d9d

Author(s) (in the same order as the commits):
	Pedro Alves <palves@redhat.com>

Subject:
	"gdb.arch/i386-pkru.exp: probe PKRU support" shouldn't FAIL if not supported

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-ppc64be-native-gdbserver-m64/25/25dcbff6ef0088e080d92b3cbc346ae0b5071d9d/>