drm/radeon: use generic DMA API

Use generic DMA api instead of bus-specific API.

Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nirmoy Das 2020-11-20 17:00:21 +01:00 • committed by Alex Deucher
commit 7e7726ec1f