This commit fixes the dependency resolution of `gnrc_netif_cmd_lora`.
As it was, this module was pulled by the driver if `gnrc` was used.
Besides pulling an extra dependency in applications that don't use
`shell_commands` or `gnrc_lorawan`, this hardcodes the module
resolution in the drivers.
This commit pulls `gnrc_netif_cmd_lora` if `shell_commands` and
`gnrc_lorawan` are present.
