Bump RPi SDIO WiFi firmware to latest version (#3719)

* buildroot c65b0306bb...b2077df873 (1):
  > package/brcmfmac_sdio-firmware-rpi: bump version to 4c1789e

Raspberry Pi kernel 6.6 driver for BCM43455 (used in RPi 3B+/4B) calls new API
which uses the DUMP_OBSS feature for channel selection. If it's not preset, it
results in drivers reporting errors, e.g.:

brcmf_set_channel: set chanspec 0xd099 fail, reason -52

The RPi OS firmware was updated but the package we use for this firmware
contains an old version that lacks this support. Update to latest version
synced from RPi upstream to fix the issues. The root cause is explained in [1]
by @ragazenta. Both disabling the DUMP_OBSS and updating the firmware makes the
errors go away.

[1] raspberrypi/linux#6049 (comment)

Fixes #3367