dm8000: add wifiusblegacy to the MACHINE_FEATURES
dm8000: add wifiusblegacy to the MACHINE_FEATURES

even though the dm8000 uses a pci wifi module, and strictly would not
need usb wifi drivers, we need to define "wifiusblegacy" to avoid
that the image depends on the usb wifi kernel modules, which are not
available with kernel version 2.6.18.
"wifiusblegacy" selects external usb wifi drivers instead.

SIFTeam/openembedded,BlackPole/bp-openembedded,SIFTeam/openembedded,SIFTeam/openembedded,BlackPole/bp-openembedded,BlackPole/bp-openembedded,BlackPole/bp-openembedded,nx111/openembeded_openpli2.1_nx111,SIFTeam/openembedded,BlackPole/bp-openembedded,SIFTeam/openembedded,BlackPole/bp-openembedded,nx111/openembeded_openpli2.1_nx111,nx111/openembeded_openpli2.1_nx111,BlackPole/bp-openembedded,nx111/openembeded_openpli2.1_nx111,SIFTeam/openembedded,nx111/openembeded_openpli2.1_nx111,SIFTeam/openembedded,nx111/openembeded_openpli2.1_nx111,nx111/openembeded_openpli2.1_nx111,nx111/openembeded_openpli2.1_nx111