drm/amdgpu/display: fix warning when compiling without debugfs

fixes unused variable warning.

Reported-by: Eric Biggers <ebiggers@kernel.org>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2020-04-08 09:30:11 -04:00
commit ef91e8b5c8