[Buildroot] [PATCH 1/6] board/raspberrypi/readme.txt: add note for bootcode.bin

[Julien Olivain]

On 15/04/2025 17:31, Gaël PORTAY wrote:
> The second-stage bootloader is contained in the onboard EEPROM[1] since
> the Raspberry Pi 4 (i.e. for pi4, pi400, cm4, cm4s and pi5).
> 
> Therefore, the file bootcode.bin[2] is needed for the former Raspberry
> Pi only (i.e. pi1, pi2, pi3, pi0, pi0w and pizero2w).
> 
> This adds a note precising the file bootcode.bin is present for the
> former versions of the Raspberry Pi.
> 
> [1]: 
> https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#raspberry-pi-boot-eeprom
> [2]: 
> https://www.raspberrypi.com/documentation/computers/configuration.html#bootcode-bin
> 
> Signed-off-by: Gaël PORTAY <gael.portay+rtone at gmail.com>

Series applied to master, thanks.