ir-keytable broken

After upgrade to nightly-20231216-63347fc (RPi4.aarch64) my IR remote stopped working.

I am using gpio_ir_recv and found the custom mapping does not work anymore.

Found /sys/class/rc/rc0/ with:
Name: gpio_ir_recv
Driver: gpio_ir_recv
Default keymap: rc-rc6-mce
Input device: /dev/input/event1
LIRC device: /dev/lirc1
Attached BPF protocols:
Supported kernel protocols: lirc rc-5 rc-5-sz jvc sony nec sanyo mce_kbd rc-6 sharp xmp imon rc-mm
Enabled kernel protocols: lirc rc-6
bus: 25, vendor/product: 0001:0001, version: 0x0100
Repeat delay: 500 ms, repeat period: 125 ms

# ir-keytable -a /storage/.config/rc_maps.cfg -s rc0
Segmentation fault (core dumped)

As the issue persisted in nightly-20231219-865d980 (RPi4.aarch64) as well, I had to analyze it & find the reason.

It looks in kernel 6.6.7 the old mapping file format is not supported anymore. I think it should not fail with Segmentation fault but...

It was necessary to reenable kernel IR protocols (for instance ir-keytable -p lirc -p rc-5 -p jvc -p sony -p nec -p sanyo -p mce_kbd -p rc-6 -p sharp) and convert the mapping file to .toml format. Then it works again.