i386 cpufreq Kconfig fixes:
- /proc/acpi/processor/../performance is available for all ACPI perflib drivers
- powernow-k8 depends on FREQ_TABLE
- clarify the heavy dependency of SPEEDSTEP_CENTRINO on ACPI
- remove the EXPERIMENTAL tag of SPEEDSTEP_CENTRINO_ACPI
- allow to disable SPEEDSTEP_CENTRINO_TABLE
Signed-off-by: Dominik Brodowski <linux@brodo.de>
Signed-off-by: Dave Jones <davej@redhat.com>