drm/amdgpu/display: fix build when DCN KCONFIG is not set

Leads to an undefined symbol otherwise.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2019-03-20 16:15:22 -05:00
commit 4e8738a206