package/brcmfmac_sdio-firmware-rpi: bump version to 4c1789e #61
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Bump version to the latest synced version from RPi OS that adds firmware for new chipsets and updates BCM43455 SDIO firmware. The old firmware has some features missing which can result in the driver returning errors like:
brcmf_set_channel: set chanspec 0xd099 fail, reason -52
This was tracked down [1] to usage of DUMP_OBSS feature, and while disabling this feature is a potential workaround, updating the firmware is actually the correct solution to the problem.
Buildroot is using downstream kernel 6.6 already since 51b4421, so the firmware should be bumped to what RPi OS uses at this point too.
[1] raspberrypi/linux#6049 (comment)