fixing rig configuration maps for burung

[neuromusic]

The current configuration has some problems

port_site['bodegh16'] = {'Port_%d' % (i+1) : i+1 for i in range(16) }
port_site['burung16'] = port_site['bodegh16']

# Burung system with 32 channels trhough amps 2, 3, with no adapter
port_site['burung32'] = {'Port_%d' % (i+1+16) : i+1 for i in range(32)} 

# Buring system with the A32 adapter for neuronexus probes
port_site['burung32-A32-HST32V'] = apply_adapter(port_site['burung32'], site_headstage['A32-HST32V'])

• burung16 is the configuration with the 16ch adapter in place
• burung32-A32-HST32V is the mapping with the 32ch adapter in place
• burung32 is a configuration "without an adapter" which doesn't make any sense because we need an adapter between the probe and the headstage

the problem here is with burung32 which returns an invalid configuration

solution: make sure burung32 returns the default headstage configuration (that is, the same config as burung32-A32-HST32V), like burung16 does