From: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>

In P4, CPU tsc rate won't change with CPU frequency change while using Enhanced
Speedstep Technology. Tested with both speedstep-centrino and acpi-cpufreq on
both i386 and x86-64.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dominik Brodowski <linux@brodo.de>
Signed-off-by: Dave Jones <davej@redhat.com>