hdp: Delay ChannelConnected signal
hdp: Delay ChannelConnected signal

This signal is sent before channel is connected as soon as MCAP accepts
the data channel creation request. At this moment, applications that
try to get the fd before the connection finishes will fail. This problem
can be solved delaying the ChannelConnection signal until the connection
operation finishes.

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