This commit adds basic support for nRF52833 SoC.
Changes affect introducing:
- architecuture files (dtsi)
- configuration of nrfx drivers
- adaptation of inclusions based on chosen SoC
- configuration of NFCT_PINS_AS_GPIOS depends on HAS_HW_NRF_NFCT.
Signed-off-by: Emil Obalski <emil.obalski@nordicsemi.no>
