tests: benchmark: Fixing some of missing KPIs stats for ARM based SOC

Some of benchmark stats were not reported for nrf52/52 based SOCs.
This was because nrf based SOCs use external timer.
In timing info some of benchmark stats still use systick based APIs.
Due to which benchmarking number was not getting reported. So change
it to timer based for nrf.

Signed-off-by: Youvedeep Singh <youvedeep.singh@intel.com>