oeqa/runtime/virgl: Update test to match new mesa version

The output string changed slightly in new mesa versions so update
the test to match.

(From OE-Core rev: 2f1a233e75e7202e2959fee3437def388262c57a)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-selftest/lib/oeqa/runtime/cases/virgl.py

@@ -15,4 +15,4 @@ class VirglTest(OERuntimeTestCase):
     def test_kmscube(self):
         status, output = self.target.run('kmscube')
         self.assertEqual(status, 0, "kmscube exited with non-zero status %d and output:\n%s" %(status, output))
-        self.assertIn('renderer: "virgl"', output, "kmscube does not seem to use virgl:\n%s" %(output))
+        self.assertIn('renderer: "virgl', output, "kmscube does not seem to use virgl:\n%s" %(output))