boards: pic32-wifire: Define uart_config
boards: pic32-wifire: Define uart_config

Signed-off-by: Francois Berder <880c5b95aa239388d35adb184ba52ce6e74e78eb@users.noreply.github.com>

OlegHahm/RIOT,RIOT-OS/RIOT,basilfx/RIOT,authmillenon/RIOT,miri64/RIOT,authmillenon/RIOT,yogo1212/RIOT,basilfx/RIOT,miri64/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,ant9000/RIOT,OlegHahm/RIOT,yogo1212/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,basilfx/RIOT,authmillenon/RIOT,yogo1212/RIOT,miri64/RIOT,jasonatran/RIOT,OTAkeys/RIOT,kYc0o/RIOT,ant9000/RIOT,jasonatran/RIOT,ant9000/RIOT,OTAkeys/RIOT,miri64/RIOT,jasonatran/RIOT,authmillenon/RIOT,kaspar030/RIOT,kYc0o/RIOT,yogo1212/RIOT,kYc0o/RIOT,kYc0o/RIOT,authmillenon/RIOT,kaspar030/RIOT,ant9000/RIOT,RIOT-OS/RIOT,yogo1212/RIOT,RIOT-OS/RIOT,kaspar030/RIOT,OlegHahm/RIOT,kYc0o/RIOT,OTAkeys/RIOT,miri64/RIOT,basilfx/RIOT,OlegHahm/RIOT,yogo1212/RIOT,authmillenon/RIOT,ant9000/RIOT,basilfx/RIOT,kaspar030/RIOT,kaspar030/RIOT