hwinfo: Add dependency handling for HWINFO_NRF in nonsecure

The limitation on HWINFO_NRF depending on not nonsecure was removed in
52be3030.
This caused problems when TF-M was not enabled.

This happens on the thingy53_nrf5340_cpuapp_ns board since this board
is not supported by TF-M.

Introduce proper dependency handling for the soc secure functions
to make HWINFO_NRF unavailable when no secure services exist in
nonsecure.

Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>