genpatch.yml: gen patches for all branches

Author: mkopec

.github/workflows/genpatch.yml

@@ -1,22 +1,32 @@
 name: Generate patch
 on:
   push:
-    branches: hdmi_frl
+    branches:
+      - hdmi_frl
+      - hdmi_frl_stable
 
 jobs:
   generate_patch:
     runs-on: ubuntu-24.04
+    strategy:
+      matrix:
+        include:
+          - base: stable
+            target: hdmi_frl_stable
+          - base: master
+            target: hdmi_frl
+    if: github.ref_name == matrix.target
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
         with:
-          ref: hdmi_frl
+          ref: ${{ matrix.target }}
           fetch-depth: 0
       - name: Generate patch
-        run: git diff origin/master > 0001-amdgpu-frl.patch
+        run: git diff origin/${{ matrix.base }}..HEAD > 0001-${{ matrix.target }}.patch
       - name: Save artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: "Patch"
-          path: 0001-amdgpu-frl.patch
+          name: "Patch - ${{ matrix.base }}"
+          path: 0001-${{ matrix.target }}.patch
           retention-days: 30