workflow: setup checkpatch workflow

.checkpatch.conf

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+# This isn't actually a Linux kernel tree
+--no-tree
+
+--ignore FILE_PATH_CHANGES
+--ignore COMPLEX_MACRO
+--ignore NEW_TYPEDEFS
+--ignore CONST_STRUCT
+--ignore SPDX_LICENSE_TAG

.github/license_config.yml

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+license:
+  main: apache-2.0
+  report_missing: true
+  category: Permissive
+copyright:
+  check: true
+exclude:
+  extensions:
+    - yml
+    - yaml
+    - html
+    - rst
+    - conf
+    - cfg
+  langs:
+    - HTML

.github/workflows/checkpatch.yml

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+# This is a basic workflow to help you get started with Actions
+
+name: CI
+
+# Controls when the workflow will run
+on:
+  # Triggers the workflow on push or pull request events but only for the "main" branch
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v3
+      - name: checkpatch.pl PR review
+        uses: webispy/checkpatch-action@v8
+

.github/workflows/license_check.yml

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+name: Scancode
+
+on: [pull_request]
+
+jobs:
+  scancode_job:
+    runs-on: ubuntu-20.04
+    name: Scan code for licenses
+    steps:
+    - name: Checkout the code
+      uses: actions/checkout@v1
+    - name: Scan the code
+      id: scancode
+      uses: zephyrproject-rtos/action_scancode@v4
+      with:
+        directory-to-scan: 'scan/'
+    - name: Artifact Upload
+      uses: actions/upload-artifact@v1
+      with:
+        name: scancode
+        path: ./artifacts
+
+    - name: Verify
+      run: |
+        if [ -s ./artifacts/report.txt ]; then
+          report=$(cat ./artifacts/report.txt)
+          report="${report//'%'/'%25'}"
+          report="${report//$'\n'/'%0A'}"
+          report="${report//$'\r'/'%0D'}"
+          echo "::error file=./artifacts/report.txt::$report"
+          exit 1
+        fi