For the ZTE MF287 series, a special recovery image is built. The Makefile worked fine on snapshot, but created corrupt images on the 23.05 images. By using the appropriate variable, this should be fixed. Signed-off-by: Andreas Böhler <dev@aboehler.at> (cherry picked from commit a9cc3708e0c3c4869711a9ba4b9c1437ed250721)