defconfig: msmzirc: Enable CPUFREQ configs

Enable cpu freq configs to avoid compilation errors with from
dependent drivers which may use cpufreq_update_policy apis.

Change-Id: I38f01705d41da6c1dca04a98a845f1cf28f9403c
Signed-off-by: Vamsi Krishna <vskrishn@codeaurora.org>