drm/amdgpu/VCN: set no_user_fence flag to true

There is no user fence support for VCN
Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c

@@ -2054,6 +2054,7 @@ static const struct amdgpu_ring_funcs vcn_v1_0_dec_ring_vm_funcs = {
 	.type = AMDGPU_RING_TYPE_VCN_DEC,
 	.align_mask = 0xf,
 	.support_64bit_ptrs = false,
+	.no_user_fence = true,
 	.vmhub = AMDGPU_MMHUB,
 	.get_rptr = vcn_v1_0_dec_ring_get_rptr,
 	.get_wptr = vcn_v1_0_dec_ring_get_wptr,
@@ -2087,6 +2088,7 @@ static const struct amdgpu_ring_funcs vcn_v1_0_enc_ring_vm_funcs = {
 	.align_mask = 0x3f,
 	.nop = VCN_ENC_CMD_NO_OP,
 	.support_64bit_ptrs = false,
+	.no_user_fence = true,
 	.vmhub = AMDGPU_MMHUB,
 	.get_rptr = vcn_v1_0_enc_ring_get_rptr,
 	.get_wptr = vcn_v1_0_enc_ring_get_wptr,
@@ -2118,6 +2120,7 @@ static const struct amdgpu_ring_funcs vcn_v1_0_jpeg_ring_vm_funcs = {
 	.align_mask = 0xf,
 	.nop = PACKET0(0x81ff, 0),
 	.support_64bit_ptrs = false,
+	.no_user_fence = true,
 	.vmhub = AMDGPU_MMHUB,
 	.extra_dw = 64,
 	.get_rptr = vcn_v1_0_jpeg_ring_get_rptr,