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>
Increase main and system workqueue stack sizes to avoid overflows
as the LoRaMac-node library is quite stack-hungry.
Signed-off-by: Ilya Tagunov <tagunil@gmail.com>
