cpuidle: Remove manual selection of the multiple driver support

Like the coupled idle state, it is not up to the user to set this option
but the driver to select it.

Remove the interactive selection of this option.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
cpuidle: Remove time measurement in poll state

The time measurement is already done in the cpuidle framework in the
'cpuidle_enter_state' function.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Merge branch 'pm-cpuidle' into bleeding-edge

* pm-cpuidle:
  cpuidle: Remove time measurement in poll state
  cpuidle: Remove manual selection of the multiple driver support