drm/amdgpu: Move hdp ras block init to ras sw_init

Initialize hdp ras block only when mmhub ip block
supports ras features. Driver queries ras capabilities
after early_init, ras block init needs to be moved to
sw_init.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Stanley Yang <Stanley.Yang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amd/amdgpu: remove unnecessary RAS context field

Delete ras_if->name in the RAS ctx structure and remove related lines.

Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amdgpu: add helpers for hdp ras init/fini

hdp ras init/fini are common functions that
can be shared among hdp generations

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: John Clements <John.Clements@amd.com>
Reviewed-by: Dennis Li <Dennis.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>