device: implement XL710 rx stats tracking
device: implement XL710 rx stats tracking

see also: issue #86

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