* Drop CONFIG_CAN_TI_HECC module as it fails to compile
On other 32b configs
* Drop rk3588 collabora defconfig
* Drop CAN_TI_HECC from remaining as suggested by AI
NB: This family only has one board (BananaPi R2) and has not been properly maintained in many years, so 'current' LTS kernel is enough.
No need for 'edge' kernel unless someone plans to step in as maintainer who bumps and tests it on every new kernel release.
- Adjust BananaPi R2 board config (board is mainlined)
- Remove legacy kernel patch folder and kernel config
- Remove unstable WiFi stuff
