Keyboard: Planck THK (#12597)

Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Jack Humbert <jack.humb@gmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>

keyboards/planck/planck.c

@@ -12,8 +12,8 @@ const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 
 __attribute__ ((weak))
 void matrix_init_kb(void) {
-	// Turn status LED on
-	#ifdef __AVR__
+	// Turn status LED on, with the exception of THK
+	#if defined(__AVR_ATmega32U4__)
 	setPinOutput(E6);
 	writePinHigh(E6);
 	#endif