x86, UV: Clean up uv_mmrs.h

    No code changes. Reformat definitions to make it more readable.

    I fixed alignment of comments in the structure definitions.

    Also aligned comments and most field definitions & values. Also
    sorted the defines for the SHIFT & MASK values for each MMR.
    This make the file visually much more acceptable.

    Some of the symbol names are still quite long. The file is based
    on post-processing of verilog definitions that are used for the
    node controller chip design. Although some symbol names are not
    what I would chose, I would like to maintain compatibility with
    the names used by the chip designers. We have a number of
    cross-reference utilities & having common names is important.

    Signed-off-by: Jack Steiner <steiner@sgi.com>
    Link: http://lkml.kernel.org/r/20110527145256.GA31224@sgi.com
    Signed-off-by: Ingo Molnar <mingo@elte.hu>