cpu/esp32: fixes NETOPT_IS_WIRED in esp_wifi
cpu/esp32: fixes NETOPT_IS_WIRED in esp_wifi

esp_wifi returns false now.
kYc0o/RIOT,miri64/RIOT,kaspar030/RIOT,BytesGalore/RIOT,OlegHahm/RIOT,BytesGalore/RIOT,mfrey/RIOT,mfrey/RIOT,josephnoir/RIOT,lazytech-org/RIOT,A-Paul/RIOT,yogo1212/RIOT,BytesGalore/RIOT,A-Paul/RIOT,aeneby/RIOT,jasonatran/RIOT,OTAkeys/RIOT,toonst/RIOT,basilfx/RIOT,ant9000/RIOT,basilfx/RIOT,rfuentess/RIOT,cladmi/RIOT,x3ro/RIOT,smlng/RIOT,ant9000/RIOT,smlng/RIOT,basilfx/RIOT,josephnoir/RIOT,authmillenon/RIOT,ant9000/RIOT,A-Paul/RIOT,kaspar030/RIOT,mtausig/RIOT,cladmi/RIOT,authmillenon/RIOT,mtausig/RIOT,cladmi/RIOT,mtausig/RIOT,authmillenon/RIOT,toonst/RIOT,authmillenon/RIOT,OlegHahm/RIOT,mtausig/RIOT,yogo1212/RIOT,x3ro/RIOT,aeneby/RIOT,kaspar030/RIOT,rfuentess/RIOT,A-Paul/RIOT,ant9000/RIOT,yogo1212/RIOT,kaspar030/RIOT,authmillenon/RIOT,toonst/RIOT,lazytech-org/RIOT,mtausig/RIOT,toonst/RIOT,x3ro/RIOT,OTAkeys/RIOT,josephnoir/RIOT,OTAkeys/RIOT,jasonatran/RIOT,aeneby/RIOT,A-Paul/RIOT,yogo1212/RIOT,jasonatran/RIOT,basilfx/RIOT,aeneby/RIOT,miri64/RIOT,mfrey/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,kYc0o/RIOT,mfrey/RIOT,kYc0o/RIOT,kYc0o/RIOT,basilfx/RIOT,miri64/RIOT,josephnoir/RIOT,x3ro/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,RIOT-OS/RIOT,OTAkeys/RIOT,yogo1212/RIOT,lazytech-org/RIOT,smlng/RIOT,miri64/RIOT,cladmi/RIOT,toonst/RIOT,BytesGalore/RIOT,rfuentess/RIOT,BytesGalore/RIOT,smlng/RIOT,smlng/RIOT,kaspar030/RIOT,jasonatran/RIOT,kYc0o/RIOT,ant9000/RIOT,OTAkeys/RIOT,lazytech-org/RIOT,RIOT-OS/RIOT,miri64/RIOT,mfrey/RIOT,OlegHahm/RIOT,josephnoir/RIOT,yogo1212/RIOT,cladmi/RIOT,lazytech-org/RIOT,RIOT-OS/RIOT,x3ro/RIOT,rfuentess/RIOT,rfuentess/RIOT,OlegHahm/RIOT,OlegHahm/RIOT,aeneby/RIOT