drivers: lora: rylrxxx: Fix missing `default y` in LORA_RYLRXXX

The `default y`, which is coupled with
`depends on DT_HAS_REYAX_RYLRXXX_ENABLED` to link the settings with
DeviceTree, which was missing, so I added it.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>
1 file changed