drm/amdgpu: update umc_info v3_3 structure for ECC

new member introduced in umc_info v3_3 to indicate
ECC capability

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>