Add a new gated modifier for GDRCopy which injects the gdrdrv device node

Signed-off-by: Christopher Desiniotis <cdesiniotis@nvidia.com>

internal/discover/gdrcopy.go

@@ -0,0 +1,27 @@
+/**
+# Copyright (c) NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+**/
+
+package discover
+
+import "github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
+
+func NewGDRCopyDiscoverer(logger logger.Interface, devRoot string) (Discover, error) {
+	return NewCharDeviceDiscoverer(
+		logger,
+		devRoot,
+		[]string{"/dev/gdrdrv"},
+	), nil
+}