[nrf fromlist] drivers: timer: nrf_grtc: Fix for optimization#3059

nordicjm merged 2 commits intonrfconnect:mainnrfconnect/sdk-zephyr:mainfrom

nordic-krch:ncs/grtc_opt_fixnordic-krch/fw-nrfconnect-zephyr:ncs/grtc_opt_fixCopy head branch name to clipboard