attrib-server: Register GATT SDP record per each adapter
attrib-server: Register GATT SDP record per each adapter

Each server has its own SDP registry wich will be managed separately.
Furthermore, this patch makes a wrapper over attrib_create_sdp function
using the default GATT server started in thye default adapter in order
to keep backward compatibility with the gatt server interface until the
api is finally updated.

pkarasev3/bluez,pkarasev3/bluez,mapfau/bluez,ComputeCycles/bluez,silent-snowman/bluez,mapfau/bluez,ComputeCycles/bluez,pstglia/external-bluetooth-bluez,ComputeCycles/bluez,pkarasev3/bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,mapfau/bluez,silent-snowman/bluez,ComputeCycles/bluez,mapfau/bluez,silent-snowman/bluez,pstglia/external-bluetooth-bluez