drm/amdgpu: add vcn 4.0.6 discovery support

This patch is to add vcn 4.0.6 support
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -2140,6 +2140,7 @@ static int amdgpu_discovery_set_mm_ip_blocks(struct amdgpu_device *adev)
 			amdgpu_device_ip_block_add(adev, &jpeg_v4_0_3_ip_block);
 			break;
 		case IP_VERSION(4, 0, 5):
+		case IP_VERSION(4, 0, 6):
 			amdgpu_device_ip_block_add(adev, &vcn_v4_0_5_ip_block);
 			amdgpu_device_ip_block_add(adev, &jpeg_v4_0_5_ip_block);
 			break;