v1.0.15: Default TX power to board PA_MAX_OUTPUT

- Add PA_MAX_OUTPUT define: V3=22, V4=28, default=20
- Captive portal TX power field now defaults to board max

Boards.h

@@ -379,6 +379,8 @@
       #define HAS_BUSY true
       #define DIO2_AS_RF_SWITCH true
 
+      #define PA_MAX_OUTPUT  22
+
       // Following pins are for the SX1262
       const int pin_cs = 8;
       const int pin_busy = 13;
@@ -935,6 +937,10 @@
     #define OCP_TUNED 0x18
   #endif
 
+  #ifndef PA_MAX_OUTPUT
+    #define PA_MAX_OUTPUT 20
+  #endif
+
   #ifndef NP_M
     #define NP_M 0.15
   #endif

BoundaryConfig.h

@@ -79,7 +79,7 @@ static void config_send_html() {
     int cur_sf        = lora_sf;
     int cur_cr        = lora_cr;
     int cur_txp       = lora_txp;
-    if (cur_txp == 0xFF) cur_txp = 28;  // Default TX power
+    if (cur_txp == 0xFF) cur_txp = PA_MAX_OUTPUT;  // Default to board max
 
     // Default frequency if not set
     if (cur_freq == 0) cur_freq = 914875000;  // 914.875 MHz default