drm/amdgpu/gfxhub: Program CRASH_ON_*_FAULT bits to 0 as needed

drm/amdgpu/gfxhub: Program CRASH_ON_*_FAULT bits to 0 as needed

When the fault stop mode isn't AMDGPU_VM_FAULT_STOP_ALWAYS,
these bits should be programmed to 0.

Program CRASH_ON_NO_RETRY_FAULT and CRASH_ON_RETRY_FAULT
always, to make sure to clear the bits when we don't want
to crash.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit d0cd99e73090700b7a942b98a3327ec966597d0a)