fixed type error

Author: mkalkbrenner

src/displayConfig.h

@@ -10,7 +10,7 @@
 // Global variables
 extern int8_t rgbMode;
 extern uint8_t rgbModeLoaded;
-extern uint8_t yOffset;
+extern int8_t yOffset;
 
 // Constant array
 extern const uint8_t rgbOrder[3 * 6];