Some firmware packages has only a WCNSS config file, which is decoded
from base64 uploaded to Pastebin, and there is nothing to unpack.
[ci:ignore-count]
[ci:skip-build]: already built successfully in CI
Right now we have multiple variants of A3 that are only different in
secure-boot keys and as such different firmware blobs.
Use msm-firmware-loader to support all A3 variants with a single device
port. Because of that, drop lte suffix as there are 3g variants as well.