Fix bluetooth on redpine cards with 2.0.0024 firmware
Firmware 2.0.0024 broke BLE so we need to be able to use dev_oper_mode 5
/etc/modprobe.d/librem5-devkit.conf needs to be updated and change
dev_oper_mode=13 to dev_oper_mode=5
I think this is a better fix than https://source.puri.sm/Librem5/linux-next/-/merge_requests/360