drm/amdgpu: enable xgmi support for Aldebaran

Like its predecessors Aldebran also supports advanced high bandwidth
GPU-GPU communication interface known as xgmi. This enables the basic
xgmi support while refactoring the code slightly.

Detection of xgmi link between host cpu and gpu will be introduced in a
different patch.
Reviewed-by: Oak Zeng <oak.zeng@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/soc15.c

@@ -917,7 +917,9 @@ int soc15_set_ip_blocks(struct amdgpu_device *adev)
 	if (!amdgpu_sriov_vf(adev))
 		soc15_reg_base_init(adev);
 
-	if (adev->asic_type == CHIP_VEGA20 || adev->asic_type == CHIP_ARCTURUS)
+	if (adev->asic_type == CHIP_VEGA20 ||
+	    adev->asic_type == CHIP_ARCTURUS ||
+	    adev->asic_type == CHIP_ALDEBARAN)
 		adev->gmc.xgmi.supported = true;
 
 	if (adev->flags & AMD_IS_APU) {