[tesla-dev] C-state driver draft update

[Li, Aubrey]

changelog:
1) the way to place processor into deep cstate is determined by 
register address space id, instead by mwait feature.
2) export cpu_wakeup and cpu_mwait_wakeup, so that disp_enq_thread
can be assigned on the fly.

 io/cpu_idle.c   |   58
++++++++++++++++++++++++++++++++++++--------------------
 os/mp_machdep.c |   12 +++++------
 os/mp_pc.c      |    4 +--
 sys/cpu_idle.h  |    4 ++-
 4 files changed, 49 insertions(+), 29 deletions(-)

Thanks,
-Aubrey