Initial code for AX.25 support.

MMDVM.ini

@@ -175,6 +175,9 @@ RFAudioBoost=1
 MaxDevLevel=90
 ExtAudioBoost=1
 
+[AX.25]
+Enable=1
+
 [D-Star Network]
 Enable=1
 GatewayAddress=127.0.0.1
@@ -231,6 +234,14 @@ GatewayPort=4800
 # ModeHang=3
 Debug=0
 
+[AX.25 Network]
+Enable=1
+LocalAddress=127.0.0.1
+LocalPort=47325
+GatewayAddress=127.0.0.1
+GatewayPort=47326
+Debug=0
+
 [TFT Serial]
 # Port=modem
 Port=/dev/ttyAMA0