o) Cavium Octeon doesn't need nop barriers. o) Have mips_wblush just do syncw, not sync on Cavium Octeon. o) Add support for reading and writing some Octeon-specific registers.    NB: Some of these are not entirely Octeon-specific.
o) Cavium Octeon doesn't need nop barriers.
o) Have mips_wblush just do syncw, not sync on Cavium Octeon.
o) Add support for reading and writing some Octeon-specific registers.
   NB: Some of these are not entirely Octeon-specific.

Submitted by:	Bhanu Prakash

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