This change allows to create custom implementations of `abstract_mem_t`
and inject them when constructing `sim_t`. The current `mem_t`
implementation remains unchanged.
Fixes#1408.
Plugins should now implement and register a device_factory_t to
configure how that device should be parsed from a FDT, and an optional
default DTS string.
This drops support for command-line flag-based device configuration
The addition of Svadu support and removal of --mmu-dirty
command line flag results in the dirty_enabled configuration state
no longer being used. Remove the remnants of this state.
Michal Terepeta
Jerry Zhao
Andrew Waterman
Aaron Durbin
Parshintsev Anatoly