drm/amd/pm: Add ih for SMU v13.0.6 thermal throttling

Add interrupt handler for thermal throttler events from
PMFW on SMUv13.0.6

Signed-off-by: Asad kamal <asad.kamal@amd.com>
Acked-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>