soc: nordic: add IronSide SE compatible UICR support

Add support for generating UICR and associated artifacts in a
format compatible with IronSide SE, to be used for Nordic SoCs
in the Haltium family.

The main feature added with this is the ability to configure certain
global domain peripherals that are managed by the secure domain
through setting UICR.PERIPHCONF. This register points at a blob of
(register address, register value) pairs which are loaded
into the peripherals by IronSide SE ahead of the application boot.

The added helper macros in uicr.h can be used to add register
configurations to the PERIPHCONF. Entries added through these macros
are then extracted by a script, post-processed and placed in a blob
located at specific part of MRAM.

A default PERIPHCONF configuration has been added for the nrf54h20
soc to support the standard BLE use case (matching the configuration
in the soc devicetree).

Signed-off-by: Jonathan Nilsen <jonathan.nilsen@nordicsemi.no>