soc: qcom: rq_stats: add snapshot of run queue stats driver

Add a snapshot of the run queue stats driver as of msm-3.10 commit
4bf320bd ("Merge "ASoC: msm8952: set async flag for 8952 dailink"")

Resolve checkpatch warnings in the process, notably the replacement
of sscanf with kstrtouint.

Change-Id: I7e2f98223677e6477df114ffe770c0740ed37de9
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>