Direct firmware load for brcm/brcmfmac43456-sdio.radxa,rockpi4b.bin failed with error -2
Direct firmware load for brcm/brcmfmac43456-sdio.clm_blob failed with error -2
^ Those are harmless messages; the driver looks for board-specific firmware/nvram files before falling back to generic files, and it's rare to see any devices have clm_blob (board-specific performance tuning) files available.
Your board will be using generic files, so there's two things to try:
a) Update to a current LE12 nightly so you're using a recent kernel that may have driver fixes.
b) Some boards need specific firmware/nvram config as generic files cause problems. So I'd have a look in Radxa GitHub repos (or Armbian) to see what they ship with that board. If you put the files in /storage/.config/firmware/brcm/ with the filename brcmfmac43456-sdio.radxa,rockpi4b.bin (firmware) and brcmfmac43456-sdio.radxa,rockpi4b.txt (nvram) and reboot, they will be used instead of the generic files. If that fixes the problem point me to links and we can add them to our images.
Otherwise it's not something I've seen before with Broadcom modules. It does happen with cheap Realtek USB dongles where the manufacturer was too lazy to get unique OID's for their devices or programmed everything with 00:00:00:00:00:00.