test: Record and show the totals for all test runs

With 'ut all' multiple test suites are run. Add a way to collect totals
and show them at the end.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/cmd_ut.c b/test/cmd_ut.c
index 80df954..0b8bfe6 100644
--- a/test/cmd_ut.c
+++ b/test/cmd_ut.c
@@ -206,6 +206,7 @@
 				any_fail = retval;
 		}
 	}
+	ut_report(&uts->total, uts->run_count);
 
 	return any_fail;
 }