Similar to the changes made in #48048, compile in the appropriate lora
modem driver when `CONFIG_LORA=y`. The `LORA_SX12XX` symbol has no
use now so remove. LoRa and LoRaWAN subsystems are still marked as
unstable so no additional deprecation cycle is needed.
Signed-off-by: Jordan Yates <jordan.yates@data61.csiro.au>
Update the LoRaMac-node library to the last stable release and fix
the Zephyr glue code to match it. Move CMakeLists.txt to the main
Zephyr repository to simplify loramac-node module maintenance.
Signed-off-by: Ilya Tagunov <tagunil@gmail.com>