Changed marco "swap" to "swapOLED"

I found out the having the macro named "swap" interferes with other system libraries, such as sstream and regex.

Author: MusicalCreeper01

Firmware/pong/oled/Edison_OLED.h

@@ -26,7 +26,7 @@
 #ifndef EDISON_OLED_H
 #define EDISON_OLED_H
 
-#define swap(a, b) { unsigned char t = a; a = b; b = t; }
+#define swapOLED(a, b) { unsigned char t = a; a = b; b = t; }
 
 #define BLACK 0
 #define WHITE 1