ci: build lkm only if needed while building manager

.github/workflows/gki-kernel-mock.yml

@@ -0,0 +1,79 @@
+name: GKI Kernel Build
+
+on:
+  workflow_call:
+    inputs:
+      version:
+        required: true
+        type: string
+        description: >
+          Output directory of gki,
+          for example: android12-5.10
+      version_name:
+        required: true
+        type: string
+        description: >
+          With SUBLEVEL of kernel,
+          for example: android12-5.10.66
+      tag:
+        required: true
+        type: string
+        description: >
+          Part of branch name of common kernel manifest,
+          for example: android12-5.10-2021-11
+      os_patch_level:
+        required: false
+        type: string
+        description: >
+          Patch level of common kernel manifest,
+          for example: 2021-11
+        default: 2022-05
+      patch_path:
+        required: false
+        type: string
+        description: >
+          Directory name of .github/patches/<patch_path>
+          for example: 5.10
+      use_cache:
+        required: false
+        type: boolean
+        default: true
+      embed_ksud:
+        required: false
+        type: string
+        default: ksud-aarch64-linux-android
+        description: >
+          Artifact name of prebuilt ksud to be embedded
+          for example: ksud-aarch64-linux-android
+      debug:
+        required: false
+        type: boolean
+        default: false
+      build_lkm:
+        required: false
+        type: boolean
+        default: false
+    secrets:
+      BOOT_SIGN_KEY:
+        required: false
+      CHAT_ID:
+        required: false
+      BOT_TOKEN:
+        required: false
+      MESSAGE_THREAD_ID:
+        required: false
+
+jobs:
+  mock_build:
+    name: Mock build ${{ inputs.version_name }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create mocking ko
+        run: |
+          echo "${{ inputs.version }}_kernelsu.ko" > ${{ inputs.version }}_kernelsu.ko
+      - name: Upload LKM
+        uses: actions/upload-artifact@v4
+        if: ${{ inputs.build_lkm == true }}
+        with:
+          name: ${{ inputs.version }}-lkm
+          path: ./*_kernelsu.ko