Merge tag 'nova-next-6.15-2025-03-09' of gitlab.freedesktop.org:drm/nova into drm-next

Nova changes for v6.15

nova-core:
  - initial skeleton driver
  - documentation
    - project guidelines
    - task (todo) list

firmware:
  - `module_firmware!` macro
  - `firmware::ModInfoBuilder`

Rust:
  - `LocalModule` type alias
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Danilo Krummrich <dakr@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/Z84dHHEn6xfvlRxk@cassiopeiae

Author: airlied

Documentation/gpu/drivers.rst

@@ -25,6 +25,7 @@ GPU Driver Documentation
    panfrost
    panthor
    zynqmp
+   nova/index
 
 .. only::  subproject and html
 

Documentation/gpu/nova/core/guidelines.rst

@@ -0,0 +1,24 @@
+.. SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+==========
+Guidelines
+==========
+
+This documents contains the guidelines for nova-core. Additionally, all common
+guidelines of the Nova project do apply.
+
+Driver API
+==========
+
+One main purpose of nova-core is to implement the abstraction around the
+firmware interface of GSP and provide a firmware (version) independent API for
+2nd level drivers, such as nova-drm or the vGPU manager VFIO driver.
+
+Therefore, it is not permitted to leak firmware (version) specifics, through the
+driver API, to 2nd level drivers.
+
+Acceptance Criteria
+===================
+
+- To the extend possible, patches submitted to nova-core must be tested for
+  regressions with all 2nd level drivers.