tests/data/uefi-boot-images: Add ISO image for LoongArch system

tests/data/uefi-boot-images: Add ISO image for LoongArch system

To test ACPI tables, edk2 needs to be booted with a disk image having
EFI partition. This image is created using UefiTestToolsPkg.

The image is generated with the following command:
  make -f tests/uefi-test-tools/Makefile

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20250520130158.767083-3-maobibo@loongson.cn>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>