Create dedicated Aldebaran kfd2kgd callbacks to prepare
for new per-vmid register instructions for debug trap
setting functions and sending host traps.

v2: rebase (Alex)
Signed-off-by: Jonathan Kim <Jonathan.Kim@amd.com>
Reviewed-by: Oak Zeng <Oak.Zeng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>