Make OzoneCPU work again in SE/FS.

Make OzoneCPU work again in SE/FS.

src/cpu/ozone/cpu.hh:
    Fixes to get OzoneCPU working in SE/FS again.
src/cpu/ozone/cpu_impl.hh:
    Be sure to set up ports properly.
src/cpu/ozone/front_end.hh:
    Allow port to be created without specifying its name at the beginning.
src/cpu/ozone/front_end_impl.hh:
    Setup port properly, also only use checker if it's enabled.
src/cpu/ozone/lw_back_end_impl.hh:
    Be sure to initialize variables.
src/cpu/ozone/lw_lsq.hh:
    Handle locked flag for UP systems.
src/cpu/ozone/lw_lsq_impl.hh:
    Initialize all variables.
src/python/m5/objects/OzoneCPU.py:
    Fix up config.

--HG--
extra : convert_revision : c99e7bf82fc0dd1099c7a82eaebd58ab6017764d