github: Add binary kernel binary build and upload

Signed-off-by: Rob Bradford <rbradford@rivosinc.com>

Author: rbradford

.github/workflows/release.yaml

@@ -0,0 +1,52 @@
+name: Cloud Hypervisor Linux Release
+on: [create, push]
+
+jobs:
+  release:
+    #if: github.event_name == 'create' && github.event.ref_type == 'tag'
+    name: Release
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Code checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+      - name: Install build tools
+        run: sudo apt install build-essential flex bison libssl-dev libelf-dev bc gcc-aarch64-linux-gnu
+      - name: Download config (aarch64)
+        run: curl https://raw.githubusercontent.com/cloud-hypervisor/cloud-hypervisor/main/resources/linux-config-aarch64 -o .config
+      - name: Build (aarch64)
+        run: ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make Image.gz -j `nproc`
+#     - name: Download config
+#       run: curl https://raw.githubusercontent.com/cloud-hypervisor/cloud-hypervisor/main/resources/linux-config-x86_64 -o .config
+#     - name: Build kernel
+#       run: CFLAGS="-Wa,-mx86-used-note=no" make bzImage -j `nproc`
+#     - name: Create release
+#       id: create_release
+#       uses: actions/create-release@v1
+#       env:
+#         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+#       with:
+#         tag_name: ${{ github.ref }}
+#         release_name: ${{ github.ref }}
+#         draft: true
+#     - name: Upload bzImage for x86_64
+#       id: upload-release-hypervisor-fw
+#       uses: actions/upload-release-asset@v1
+#       env:
+#         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+#       with:
+#         upload_url: ${{ steps.create_release.outputs.upload_url }}
+#         asset_path: arch/x86/boot/bzImage
+#         asset_name: bzImage
+#         asset_content_type: application/octet-stream
+#     - name: Upload vmlinux for x86_64
+#       id: upload-release-hypervisor-fw
+#       uses: actions/upload-release-asset@v1
+#       env:
+#         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+#       with:
+#         upload_url: ${{ steps.create_release.outputs.upload_url }}
+#         asset_path: vmlinux
+#         asset_name: vmlinux
+#         asset_content_type: application/octet-stream