Make memtest work with 8 memtesters

src/mem/physical.cc:
    Update comment to match memtest use
src/python/m5/objects/PhysicalMemory.py:
    Make memtester have a way to connect functionally
tests/configs/memtest.py:
    Properly create 8 memtesters and connect them to the memory system

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extra : convert_revision : e5a2dd9c8918d58051b553b5c6a14785d48b34ca
3 files changed