srsenb: start_locally(): Fix missing class name in attribute access

Change-Id: I5e11dc9c3c0dcf4808a3ad67fe96580480fe47d1
diff --git a/src/osmo_gsm_tester/srs_enb.py b/src/osmo_gsm_tester/srs_enb.py
index f5d3fdf..1df8074 100644
--- a/src/osmo_gsm_tester/srs_enb.py
+++ b/src/osmo_gsm_tester/srs_enb.py
@@ -160,7 +160,7 @@
     def start_locally(self):
         inst = util.Dir(os.path.abspath(self.suite_run.trial.get_inst('srslte')))
 
-        binary = inst.child('bin', BINFILE)
+        binary = inst.child('bin', srsENB.BINFILE)
         if not os.path.isfile(binary):
             raise log.Error('Binary missing:', binary)
         lib = inst.child('lib')