💡 Adjust headers, formatting

Marlin/src/HAL/TEENSY31_32/eeprom.cpp

@@ -2,6 +2,9 @@
  * Marlin 3D Printer Firmware
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
@@ -16,6 +19,7 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
+
 #ifdef __MK20DX256__
 
 /**