Initialize cuttlefish's ril from properties instead of VSoC region

On boot the launcher sets a set of cuttlefish_ril_... properties which
the ril hal reads to initialize itself.

This change applies both to vsoc and virtio hardware types.

Bug: 124012805
Test: build & run locally
Change-Id: I59dfb8791ff39b93ed821d54b299271a65fbab21