[DRIVER][BT] Add serdev support for 88W8997
- Adds BT over UART support for AzureWave Wireless module.
- Workaround the compile issue because of .prevent_wake member was renamed to .wakeup, but not adjusted in drivers. Tried changing the member here, but in that case the module won't work. Probably needs adjustment in more places.
Edited by Oleksii Kutuzov