Portduino: Allow limiting TX Power from yaml (#5954)

src/mesh/RF95Interface.cpp

@@ -9,6 +9,9 @@
 #include "PortduinoGlue.h"
 #endif
 
+#if ARCH_PORTDUINO
+#define RF95_MAX_POWER settingsMap[rf95_max_power]
+#endif
 #ifndef RF95_MAX_POWER
 #define RF95_MAX_POWER 20
 #endif
@@ -337,4 +340,4 @@ bool RF95Interface::sleep()
 
     return true;
 }
-#endif
+#endif