drm/amdkfd: add sdma poison consumption handling

Follow the same apporach as GFX to handle SDMA
poison consumption. Send SIGBUS to application
when receives SDMA_ECC interrupt and issue gpu
reset either mode 2 or mode 1 to get the engine
back

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Dennis <Li&lt;dennis.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>