Add support for Raspberry pi OS Bookworm (and, to some extent, Pi5)

[Williangalvani]

I expect this to break AT LEAST the pi4 serial port mapping

known issues:

• ssh is not getting enabled automatically, even with the ssh file at /boot
• pi5 i2c ports are not working, probably need some update to the overlays

Steps:

• Fix messing up cmdline.txt in bookworm
• Get 32 bit images working
• Move on to 64 bits and deal with the issues there

[RaulTrombin]

@Williangalvani also we need to add arm_64bit=0 to the config.txt file. If not it will load the 64 bit.

Since kernel 6, it loads the 64 by default on RPi4.
raspberrypi/rpi-firmware@7d6d960

[RaulTrombin]

I expect this to break AT LEAST the pi4 serial port mapping

known issues:

• ssh is not getting enabled automatically, even with the ssh file at /boot
• pi5 i2c ports are not working, probably need some update to the overlays

@Williangalvani Have you tryed adding the pi user?

generate the encrypted 'raspberry' password and copy
echo 'raspberry' | openssl passwd -6 -stdin

nano /boot/userconfig
pi:openssl_thing_passwd

nano /boot/ssh

[Williangalvani]

@Williangalvani Have you tryed adding the pi user?

yes, that is the second commit