Some cleanups in speedstep-centrino.c for NR_CPUS=4096.

  * Use new CPUMASK_PTR (instead of old CPUMASK_VAR).

  * Replace arrays sized by NR_CPUS with percpu variables.

  * Cleanup some formatting problems (>80 chars per line)
    and other checkpatch complaints.
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>