Add MAIN/SUB vfo setting to ic10.c

rigs/kenwood/ic10.c

@@ -408,9 +408,11 @@ int ic10_set_freq(RIG *rig, vfo_t vfo, freq_t freq)
 
     switch (tvfo)
     {
-    case RIG_VFO_A: vfo_letter = 'A'; break;
+    case RIG_VFO_A:
+    case RIG_VFO_MAIN: vfo_letter = 'A'; break;
 
-    case RIG_VFO_B: vfo_letter = 'B'; break;
+    case RIG_VFO_B: 
+    case RIG_VFO_SUB: vfo_letter = 'B'; break;
 
     default:
         rig_debug(RIG_DEBUG_ERR, "%s: unsupported VFO %s\n",