[CPUFREQ] A reduce-Jeremy's-mail patch:

[CPUFREQ] A reduce-Jeremy's-mail patch:
- Only Intel makes EST CPUs.  (Some Cyrix M IIs have the EST bit set -
  I don't know what it means, but it isn't Enhanced Speedstep.)

- If it's a known Dothan, but we're looking in the tables, give a
   useful message about using ACPI rather than mailing me.

- Code cleanups:
  - Make the CPU ID stuff table driven
  - Turn centrino_verify_cpu_id into a proper boolean predicate

 - Diddle some whitespace

Signed-off-by: Dave Jones <davej@redhat.com>