gpu: nova-core: add types for patching firmware binaries

gpu: nova-core: add types for patching firmware binaries

Some of the firmwares need to be patched at load-time with a signature.
Add a couple of types and traits that sub-modules can use to implement
this behavior, while ensuring that the correct kind of signature is
applied to the firmware.

Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250619-nova-frts-v6-21-ecf41ef99252@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>