drm/amdgpu: sdma use amdgpu_ras_feature_enable_on_boot

handle ras enable on boot.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>