Fix single-char echo and pinMode usage

Marlin/Marlin_main.cpp

     SERIAL_ECHOPAIR("(", x);
     SERIAL_ECHOPAIR(", ", y);
     SERIAL_ECHOPAIR(", ", z);
-    SERIAL_ECHOPGM(")");
+    SERIAL_CHAR(')');
 
     if (suffix) serialprintPGM(suffix);
     else SERIAL_EOL;
   #endif
 
   #if ENABLED(RGB_LED)
-    pinMode(RGB_LED_R_PIN, OUTPUT);
-    pinMode(RGB_LED_G_PIN, OUTPUT);
-    pinMode(RGB_LED_B_PIN, OUTPUT);
+    SET_OUTPUT(RGB_LED_R_PIN);
+    SET_OUTPUT(RGB_LED_G_PIN);
+    SET_OUTPUT(RGB_LED_B_PIN);
   #endif
 
   lcd_init();

Marlin/printcounter.cpp

   #if ENABLED(DEBUG_PRINTCOUNTER)
     SERIAL_ECHOPGM(" (");
     SERIAL_ECHO(this->data.printTime);
-    SERIAL_ECHOPGM(")");
+    SERIAL_CHAR(')');
   #endif
 
   elapsed = this->data.longestPrint;
   #if ENABLED(DEBUG_PRINTCOUNTER)
     SERIAL_ECHOPGM(" (");
     SERIAL_ECHO(this->data.longestPrint);
-    SERIAL_ECHOPGM(")");
+    SERIAL_CHAR(')');
   #endif
 
   SERIAL_EOL;