device: move waiting in :wait() to moongen
device: move waiting in :wait() to moongen

some drivers don't wait (e.g., i40e) for the link :(

bmichalo/MoonGen,atheurer/MoonGen,wenhuizhang/MoonGen,scholzd/MoonGen,wenhuizhang/MoonGen,gallenmu/MoonGen,kidaa/MoonGen,bmichalo/MoonGen,dschoeffm/MoonGen,gallenmu/MoonGen,NetronomeMoongen/MoonGen,duk3luk3/MoonGen,scholzd/MoonGen,wenhuizhang/MoonGen,bmichalo/MoonGen,gallenmu/MoonGen,bmichalo/MoonGen,NetronomeMoongen/MoonGen,duk3luk3/MoonGen,kidaa/MoonGen,atheurer/MoonGen,emmericp/MoonGen,NetronomeMoongen/MoonGen,duk3luk3/MoonGen,gallenmu/MoonGen,atheurer/MoonGen,dschoeffm/MoonGen,gallenmu/MoonGen,gallenmu/MoonGen,scholzd/MoonGen,dschoeffm/MoonGen,emmericp/MoonGen,kidaa/MoonGen,gallenmu/MoonGen,emmericp/MoonGen,gallenmu/MoonGen