cpufreq: schedutil: fix cpu freq trace point

cpu freq trace point is broken right now as it uses smp_processor_id().
Fix it by switching to cpu for which trace point is being printed.

Change-Id: I84f0ac7b6e095bad10c69ef01093b2da457e1c18
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>