Oct 19 23:54:25 kernel: bcma: bus0: Found chip with id 0x4360, rev 0x03 and package 0x01
Oct 19 23:54:25 kernel: bcma: bus0: Core 0 found: ChipCommon (manuf 0x4BF, id 0x800, rev 0x2B, class 0x0)
Oct 19 23:54:25 kernel: bcma: bus0: Core 1 found: IEEE 802.11 (manuf 0x4BF, id 0x812, rev 0x2A, class 0x0)
Oct 19 23:54:25 kernel: bcma: bus0: Core 2 found: ARM CR4 (manuf 0x4BF, id 0x83E, rev 0x02, class 0x0)
Oct 19 23:54:25 kernel: bcma: bus0: Core 3 found: PCIe Gen2 (manuf 0x4BF, id 0x83C, rev 0x01, class 0x0)
Oct 19 23:54:25 kernel: bcma: bus0: Core 4 found: USB 2.0 Device (manuf 0x4BF, id 0x81A, rev 0x11, class 0x0)
Oct 19 23:54:25 kernel: bcma: Unsupported SPROM revision: 11
Oct 19 23:54:25 kernel: bcma: bus0: Invalid SPROM read from the PCIe card, trying to use fallback SPROM
Oct 19 23:54:25 kernel: bcma: bus0: Using fallback SPROM failed (err -2)
Oct 19 23:54:25 kernel: bcma: bus0: No SPROM available
Oct 19 23:54:25 kernel: bcma: bus0: Bus registered
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^ looks like the card is trying to use the in-kernel brcmfmac driver instead of the vendor wl driver, so perhaps blacklist it and reboot:
echo "blacklist brcmfmac" > /storage/.config/modprobe.d/brcmfmac.conf
reboot
sorted?