config: Switch from the print statement to the print function.

Change-Id: I701fa58cfcfa2767ce9ad24da314a053889878d0
Reviewed-on: https://gem5-review.googlesource.com/8762
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com>
Maintainer: Gabe Black <gabeblack@google.com>

configs/example/ruby_random_test.py

@@ -28,6 +28,8 @@
 # Authors: Ron Dreslinski
 #          Brad Beckmann
 
+from __future__ import print_function
+
 import m5
 from m5.objects import *
 from m5.defines import buildEnv
@@ -75,7 +77,7 @@ options.l2_assoc=2
 options.l3_assoc=2
 
 if args:
-     print "Error: script doesn't take any positional arguments"
+     print("Error: script doesn't take any positional arguments")
      sys.exit(1)
 
 #
@@ -156,4 +158,4 @@ m5.instantiate()
 # simulate until program terminates
 exit_event = m5.simulate(options.abs_max_tick)
 
-print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
+print('Exiting @ tick', m5.curTick(), 'because', exit_event.getCause())