release: Rename assets with kernel arch string

Once we are releasing with more architectures (like riscv64), assets
naming with image format will conflict with other architecture when
using the same format. Append with kernel arch string to avoid possible
confliction.

Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>

Author: RuoqingHe

.github/workflows/release.yaml

@@ -37,7 +37,7 @@ jobs:
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: arch/x86/boot/bzImage
-         asset_name: bzImage
+         asset_name: bzImage-x86_64
          asset_content_type: application/octet-stream
      - name: Upload vmlinux for x86_64
        uses: actions/upload-release-asset@v1
@@ -46,7 +46,7 @@ jobs:
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: vmlinux
-         asset_name: vmlinux
+         asset_name: vmlinux-x86_64
          asset_content_type: application/octet-stream
      - name: Upload Image.gz for aarch64
        uses: actions/upload-release-asset@v1
@@ -55,7 +55,7 @@ jobs:
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: arch/arm64/boot/Image.gz
-         asset_name: Image.gz
+         asset_name: Image-arm64.gz
          asset_content_type: application/octet-stream
      - name: Upload Image for aarch64
        uses: actions/upload-release-asset@v1
@@ -64,5 +64,5 @@ jobs:
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: arch/arm64/boot/Image
-         asset_name: Image
+         asset_name: Image-arm64
          asset_content_type: application/octet-stream