drm/amdgpu/discovery: add nbio sw func for 7.5.1 nbio

add nbio sw func for the new 7.5.1 nbio block.
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -1807,6 +1807,7 @@ int amdgpu_discovery_set_ip_blocks(struct amdgpu_device *adev)
 	case IP_VERSION(7, 2, 0):
 	case IP_VERSION(7, 2, 1):
 	case IP_VERSION(7, 5, 0):
+	case IP_VERSION(7, 5, 1):
 		adev->nbio.funcs = &nbio_v7_2_funcs;
 		adev->nbio.hdp_flush_reg = &nbio_v7_2_hdp_flush_reg;
 		break;