att: Start application error codes from the beginning of the range
att: Start application error codes from the beginning of the range

Application error codes start off with 0x80 onwards. In CSSv2 the range
0xE0-0xFF is reserved for "Common Profile Error Codes" so we should
ensure not to mix that with our own definitions.

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