[PATCH -next] drm/amdgpu: update docum. filename following rename

[Randy Dunlap]

Fix documentation build errors for amdgpu: correct the filename.

Error: Cannot open file ../drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
Error: Cannot open file ../drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
Error: Cannot open file ../drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c

WARNING: kernel-doc '../scripts/kernel-doc -rst -enable-lineno -sphinx-version 5.3.0 -function MMU Notifier ../drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c' failed with return code 1
WARNING: kernel-doc '../scripts/kernel-doc -rst -enable-lineno -sphinx-version 5.3.0 -internal ../drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c' failed with return code 2

Fixes: d9483ecd327b ("drm/amdgpu: rename the files for HMM handling")
Signed-off-by: Randy Dunlap <rdunlap at infradead.org>
Cc: Christian König <christian.koenig at amd.com>
Cc: Alex Deucher <alexander.deucher at amd.com>
Cc: Felix Kuehling <Felix.Kuehling at amd.com>
Cc: David Airlie <airlied at gmail.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: Jonathan Corbet <corbet at lwn.net>
Cc: amd-gfx at lists.freedesktop.org
Cc: dri-devel at lists.freedesktop.org
---
 Documentation/gpu/amdgpu/driver-core.rst |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -- a/Documentation/gpu/amdgpu/driver-core.rst b/Documentation/gpu/amdgpu/driver-core.rst
--- a/Documentation/gpu/amdgpu/driver-core.rst
+++ b/Documentation/gpu/amdgpu/driver-core.rst
@@ -148,10 +148,10 @@ PRIME Buffer Sharing
 MMU Notifier
 ============
 
-.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
+.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c
    :doc: MMU Notifier
 
-.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
+.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c
    :internal:
 
 AMDGPU Virtual Memory