docs: nova-core: Document basics of the Falcon

Instances of the Falcon microcontroller appear in modern Nvidia GPUs and
are crucial to the GPU boot process. Document some concepts which will
make nova-core boot code easier to digest. All the information is
derived from public sources such as public documents, OpenRM and Nouveau
code.

Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
2 files changed