More Python hacking to deal with config.py split

and resulting recursive import trickiness.

--HG--
extra : convert_revision : 1ea93861eb8d260c9f3920dda0b8106db3e03705

src/python/m5/objects/Device.py

@@ -1,4 +1,5 @@
-from m5.config import *
+from m5.params import *
+from m5.proxy import *
 from MemObject import MemObject
 
 class PioDevice(MemObject):