drm/amdgpu: Use new mode2 reset interface for RV.

Integrate the mode2 reset into rest sequence.

v2:
Check ppfuncs pointer for NULL

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 files changed