drm/amdgpu/virtual_dce: clean up interrupt handling

We handle the virtual interrupts from a timer so no
need to try an look like we are handling IV ring events.

Reviewed-By: Emily Deng <Emily.Deng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2016-09-30 11:41:37 -04:00
commit 9405e47dba