cpufreq: qcom-hw: use no_log when reading cpu counter val

Use the no_log version of readl_relaxed when reading out the
counter values for CPUs to reduce the amount of logging in
RTB Logs. Scheduler activity is very frequent and clogs up the
buffer, which can potentially reduce the amount of useful logs.

Change-Id: Ib5c7595c8bae1822837c3b1f1ae56fdc3c612933
Signed-off-by: David Dai <daidavid1@codeaurora.org>