Use physical position of keys for config reset

src/board/system76/lemp9/include/board/keymap.h

@@ -45,4 +45,12 @@
 // Keymap
 extern uint16_t __xdata KEYMAP[KM_LAY][KM_OUT][KM_IN];
 
+// Position of physical Esc key in the matrix
+#define MATRIX_ESC_INPUT    7
+#define MATRIX_ESC_OUTPUT   7
+
+// Position of physical Fn key in the matrix
+#define MATRIX_FN_INPUT     0
+#define MATRIX_FN_OUTPUT    6
+
 #endif // _BOARD_KEYMAP_H