modules: hal_nordic: Enable support for DPPI on nRF54H20

Include into compilation the nrfx_gppi_dppi_ppib helper and related
interconnect layers when DPPIC nodes are enabled in DTS. Provide macro
definitions required by those interconnect layers based on information
from devicetree (the nrf_grtc_timer is only modified because a macro
that it uses became more generic).

Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>