patman: Use test_util to show test results

This handles skipped tests correctly, so use it instead of the existing
code.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/patman/test_util.py b/tools/patman/test_util.py
index aac58fb..0827488 100644
--- a/tools/patman/test_util.py
+++ b/tools/patman/test_util.py
@@ -123,12 +123,12 @@
     for test, err in result.failures:
         print(err, result.failures)
     if result.skipped:
-        print('%d binman test%s SKIPPED:' %
-              (len(result.skipped), 's' if len(result.skipped) > 1 else ''))
+        print('%d %s test%s SKIPPED:' % (len(result.skipped), toolname,
+            's' if len(result.skipped) > 1 else ''))
         for skip_info in result.skipped:
             print('%s: %s' % (skip_info[0], skip_info[1]))
     if result.errors or result.failures:
-        print('binman tests FAILED')
+        print('%s tests FAILED' % toolname)
         return 1
     return 0