drm/amdgpu/discovery: add ih6 support for IH 6.0.2

Enable Interrupt Handler v6 support.
Reviewed-by: NHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: NFlora Cui <flora.cui@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -1556,6 +1556,7 @@ static int amdgpu_discovery_set_ih_ip_blocks(struct amdgpu_device *adev)
 		amdgpu_device_ip_block_add(adev, &navi10_ih_ip_block);
 		break;
 	case IP_VERSION(6, 0, 0):
+	case IP_VERSION(6, 0, 2):
 		amdgpu_device_ip_block_add(adev, &ih_v6_0_ip_block);
 		break;
 	default: