Added getOutputPowerMax() to describe the max output power of the radio chip

se/sics/mspsim/chip/CC2420.java

@@ -1348,6 +1348,11 @@ public class CC2420 extends Radio802154 implements USARTListener {
     return -100;
   }
 
+  @Override
+  public int getOutputPowerMax() {
+      return 0;
+  }
+
   public void notifyReset() {
     super.notifyReset();
     setChipSelect(false);

se/sics/mspsim/chip/CC2520.java

@@ -1383,6 +1383,11 @@ public class CC2520 extends Radio802154 implements USARTListener, SPIData {
         return -100;
     }
 
+    @Override
+    public int getOutputPowerMax() {
+        return 5;
+    }
+
     @Override
     public void notifyReset() {
         super.notifyReset();

se/sics/mspsim/chip/Radio802154.java

@@ -51,6 +51,7 @@ public abstract class Radio802154 extends Chip implements RFListener, RFSource {
     public abstract int getActiveChannel();
     public abstract int getActiveFrequency();
     public abstract int getOutputPower();
+    public abstract int getOutputPowerMax();
     public abstract int getOutputPowerIndicator();
     public abstract int getOutputPowerIndicatorMax();