perf-tools/pdtoolkit: fix patch level
---- pdtoolkit-3.25/configure~ 2017-11-06 12:55:45.000000000 -0600
-+++ pdtoolkit-3.25/configure 2017-12-05 16:03:59.368119000 -0600
+--- a/configure 2017-11-06 10:55:45.000000000 -0800
++++ b/configure 2017-12-05 14:32:47.000000000 -0800
-prefix=*)
