openobex: new package

Cc: Julien Boibessot <julien.boibessot@armadeus.com>
Cc: Eric Jarrige <eric.jarrige@armadeus.org>
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>