fix channel setting

app/src/main/java/com/geeksville/mesh/service/MeshService.kt

@@ -542,7 +542,10 @@ class MeshService : Service(), Logging {
                 }.build()
             }
 
-            TODO("Need to send channels to device")
+            debug("Sending channels to device")
+            asChannels.forEach {
+              setChannel(it)
+            }
 
             channels = asChannels.toTypedArray()
         }
@@ -1387,6 +1390,12 @@ class MeshService : Service(), Logging {
         })
     }
 
+    private fun setChannel(channel: ChannelProtos.Channel) {
+        sendToRadio(newMeshPacketTo(myNodeNum).buildAdminPacket(wantResponse = true) {
+            setChannel = channel
+        })
+    }
+
     /**
      * Start the modern (REV2) API configuration flow
      */