chore: import upstream snapshot with attribution

cmake/modules/contrib/NNAPI.cmake

@@ -0,0 +1,40 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+
+# NNAPI Codegen
+if(USE_NNAPI_CODEGEN)
+    message(STATUS "Build with NNAPI codegen")
+
+    tvm_file_glob(GLOB COMPILER_NNAPI_SRCS src/relax/backend/contrib/nnapi/*.cc)
+    tvm_file_glob(GLOB RUNTIME_NNAPI_SRCS src/runtime/extra/contrib/nnapi/*.cc)
+    list(APPEND COMPILER_SRCS ${COMPILER_NNAPI_SRCS})
+    if(NOT USE_NNAPI_RUNTIME)
+        list(APPEND COMPILER_SRCS ${RUNTIME_NNAPI_SRCS})
+    endif()
+endif()
+
+# NNAPI Runtime — goes into libtvm_runtime_extra.
+if(USE_NNAPI_RUNTIME)
+    message(STATUS "Build with NNAPI runtime")
+
+    tvm_file_glob(GLOB RUNTIME_NNAPI_SRCS src/runtime/extra/contrib/nnapi/*.cc)
+    add_library(tvm_nnapi_objs OBJECT ${RUNTIME_NNAPI_SRCS})
+    target_link_libraries(tvm_nnapi_objs PRIVATE tvm_runtime_extra_defs)
+    target_link_libraries(tvm_runtime_extra PRIVATE tvm_nnapi_objs neuralnetworks log)
+
+    add_definitions(-DTVM_GRAPH_EXECUTOR_NNAPI)
+endif()