tests: benchmark: timing_info: Add support for nrf series processors

nrf SOC uses nrf rtc timer (not sys tick), which is 32kHz,
whereas CPU runs at higher speed (nrf52 runs at 64MHz).
So 32Khz is too slow to measure critical kernel parameters.

This patch does :-
1. Add support for nrf SOC for timing_info benchmarking.
2. Uses SOC timer to measure kernel parameters.

Jira: ZEP-2314

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