[nrf fromlist] drivers: timer: grtc: Switch GRTC clock source to LFXO#2010

rlubos merged 1 commit intonrfconnect:mainnrfconnect/sdk-zephyr:mainfrom

adamkondraciuk:NRFX-6304-switch-GRTC-source-to-LFXOadamkondraciuk/sdk-zephyr:NRFX-6304-switch-GRTC-source-to-LFXOCopy head branch name to clipboard