drm/amdgpu: Fix ecc irq enable/disable unpaired

The ecc_irq is disabled while GPU mode2 reset suspending process,
but not be enabled during GPU mode2 reset resume process.

Changed from V1:
	only do sdma/gfx ras_late_init in aldebaran_mode2_restore_ip
	delete amdgpu_ras_late_resume function

Changed from V2:
	check umc ras supported before put ecc_irq

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