configs: small fix to ruby portion of fs.py and se.py

In fs.py the io port controller was being attached to the iobus multiple
times.  This should be done only once.  In se.py, the the option use_map
was being set which no longer exists.

configs/example/fs.py

@@ -142,6 +142,10 @@ def build_test_system(np):
         test_sys.ruby.clk_domain = SrcClockDomain(clock = options.ruby_clock,
                                         voltage_domain = test_sys.voltage_domain)
 
+        # Connect the ruby io port to the PIO bus,
+        # assuming that there is just one such port.
+        test_sys.iobus.master = test_sys.ruby._io_port.slave
+
         for (i, cpu) in enumerate(test_sys.cpu):
             #
             # Tie the cpu ports to the correct ruby system ports
@@ -161,10 +165,6 @@ def build_test_system(np):
                 cpu.interrupts.int_master = test_sys.ruby._cpu_ports[i].slave
                 cpu.interrupts.int_slave = test_sys.ruby._cpu_ports[i].master
 
-            # Connect the ruby io port to the PIO bus,
-            # assuming that there is just one such port.
-            test_sys.iobus.master = test_sys.ruby._io_port.slave
-
     else:
         if options.caches or options.l2cache:
             # By default the IOCache runs at the system clock

configs/example/se.py

@@ -225,7 +225,6 @@ if options.ruby:
         print >> sys.stderr, "Ruby requires TimingSimpleCPU or O3CPU!!"
         sys.exit(1)
 
-    options.use_map = True
     Ruby.create_system(options, False, system)
     assert(options.num_cpus == len(system.ruby._cpu_ports))