Build KernelSU as LKM (#1254)

Co-authored-by: weishu <twsxtd@gmail.com>

.github/workflows/build-lkm.yml

@@ -0,0 +1,42 @@
+name: Build LKM for KernelSU
+on:
+  push:
+    branches: ["main", "ci", "checkci"]
+    paths:
+      - ".github/workflows/gki-kernel.yml"
+      - ".github/workflows/build-lkm.yml"
+      - "kernel/**"
+  pull_request:
+    branches: ["main"]
+    paths:
+      - ".github/workflows/gki-kernel.yml"
+      - ".github/workflows/build-lkm.yml"
+      - "kernel/**"
+  workflow_call:
+jobs:
+  build-lkm:
+    strategy:
+      matrix:
+        include:
+          - version: "android12-5.10"
+            sub_level: 198
+            os_patch_level: "2024-01"
+          - version: "android13-5.10"
+            sub_level: 198
+            os_patch_level: 2023-12
+          - version: "android13-5.15"
+            sub_level: 137
+            os_patch_level: 2023-12
+          - version: "android14-5.15"
+            sub_level: 110
+            os_patch_level: 2023-09
+          - version: "android14-6.1"
+            sub_level: 43
+            os_patch_level: 2023-11
+    uses: ./.github/workflows/gki-kernel.yml
+    with:
+      version: ${{ matrix.version }}
+      version_name: ${{ matrix.version }}.${{ matrix.sub_level }}
+      tag: ${{ matrix.version }}-${{ matrix.os_patch_level }}
+      os_patch_level: ${{ matrix.os_patch_level }}
+      build_lkm: true