[RELAX][BYOC] OpenCLML offload support for Relax (#17654)

This brings in OpenCLML offloading via BYOC path with available operators in Relax.
Adds codegen tests for Mainline CI.

cmake/modules/contrib/CLML.cmake

@@ -16,10 +16,10 @@
 # under the License.
 
 if(USE_CLML)
-    file(GLOB CLML_RELAY_CONTRIB_SRC src/relay/backend/contrib/clml/*.cc)
+    file(GLOB CLML_RELAX_CONTRIB_SRC src/relax/backend/contrib/clml/*.cc)
     file(GLOB CLML_RUNTIME_MODULE src/runtime/contrib/clml/clml_runtime.cc)
     include_directories(SYSTEM "3rdparty/OpenCL-Headers")
-    list(APPEND COMPILER_SRCS ${CLML_RELAY_CONTRIB_SRC})
+    list(APPEND COMPILER_SRCS ${CLML_RELAX_CONTRIB_SRC})
     if(NOT USE_CLML_GRAPH_EXECUTOR)
         list(APPEND COMPILER_SRCS ${CLML_RUNTIME_MODULE})
     endif()

python/tvm/relax/backend/__init__.py

@@ -16,7 +16,7 @@
 # under the License.
 """Relax backends"""
 
-from . import contrib, cpu_generic, cuda, gpu_generic, metal, rocm
+from . import contrib, cpu_generic, cuda, gpu_generic, metal, rocm, adreno
 from .dispatch_sampling import DispatchSampling
 from .dispatch_sort_scan import DispatchSortScan
 from .pattern_registry import get_pattern, get_patterns_with_prefix

python/tvm/relax/backend/adreno/__init__.py

@@ -0,0 +1,24 @@
+# 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.
+"""The Relax Adreno backend compilation pipeline and other passes."""
+from .pipeline import (
+    finalize_passes,
+    get_default_pipeline,
+    dataflow_lower_passes,
+    legalize_passes,
+    library_dispatch_passes,
+)