android/handsfree-client: Send AT+BCC to start codec negotiation
android/handsfree-client: Send AT+BCC to start codec negotiation

With this patch we start codec negotation on audio connect if both sides
does support it.

This patch also moves codec_negotiation_supported functions up in the
file

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