Fixed printTo

Chars must be uppercase to match toString() and pass test

Author: mrengineer7777

cores/esp32/MacAddress.cpp

@@ -129,7 +129,7 @@ size_t MacAddress::printTo(Print& p) const
         if(i){
             n += p.print(':');
         }
-        n += p.printf("%02x", _mac.bytes[i]);
+        n += p.printf("%02X", _mac.bytes[i]);
     }
     return n;
 }

cores/esp32/MacAddress8.cpp

@@ -130,7 +130,7 @@ size_t MacAddress8::printTo(Print& p) const
         if(i){
             n += p.print(':');
         }
-        n += p.printf("%02x", _mac.bytes[i]);
+        n += p.printf("%02X", _mac.bytes[i]);
     }
     return n;
 }

cores/esp32/MacAddress8.h

@@ -52,6 +52,7 @@ class MacAddress8 : public Printable {
     operator uint64_t() const;
     operator const uint8_t*() const;
     operator const uint64_t*() const;
+
     virtual size_t printTo(Print& p) const;
 
     // future use in Arduino Networking