meta-networking: update BBFILE_COLLECTIONS to networking-layer
meta-networking: update BBFILE_COLLECTIONS to networking-layer

Adopting the common convention of naming BBFILE_COLLECTIONS to be
<layername>-layer.

Signed-off-by: Joe MacDonald <16a9a54ddf4259952e3c118c763138e83693d7fd@deserted.net>

WindRiver-OpenSourceLabs/meta-networking