send range change at init for all devices
dev/io_device.cc:
dev/io_device.hh:
add init function for pio devices to sent status changes around
mem/physical.cc:
mem/physical.hh:
Panic if physical memory isn't connected to anything
--HG--
extra : convert_revision : 4223d1c3c73522d1e196c218eb0084d238677ad9