.github/workflows/genpatch.yml: Add workflow

Author: mkopec

.github/workflows/genpatch.yml

@@ -0,0 +1,22 @@
+name: Generate patch
+on:
+  push:
+    branches: hdmi_frl
+
+jobs:
+  generate_patch:
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          ref: hdmi_frl
+          fetch-depth: 0
+      - name: Generate patch
+        run: git diff master > 0001-amdgpu-frl.patch
+      - name: Save artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: "Patch"
+          path: 0001-amdgpu-frl.patch
+          retention-days: 30

.gitignore

@@ -10,7 +10,7 @@
 #
 # Normal rules (sorted alphabetically)
 #
-.*
+.
 *.a
 *.asn1.[ch]
 *.bin