As the vendor folder friendlyarm is created, move board nanopi-neo
also under vendor folder.

Signed-off-by: Chakra Divi <chakra@openedev.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>