RTC fixes for Teensy41 and mega2561

platformio.ini

@@ -24,7 +24,7 @@ board=ATmega2561
 framework=arduino
 build_unflags = -Os
 build_flags = -O3 -ffast-math -Wall -Wextra -std=c99
-lib_deps = EEPROM
+lib_deps = EEPROM, Time
 test_build_project_src = true
 
 [env:teensy35]

speeduino/board_teensy41.h

@@ -17,6 +17,8 @@
   #define BOARD_DIGITAL_GPIO_PINS 34
   #define BOARD_NR_GPIO_PINS 34
   #define EEPROM_LIB_H <EEPROM.h>
+  #define RTC_ENABLED
+  #define RTC_LIB_H "TimeLib.h"
 
   #define micros_safe() micros() //timer5 method is not used on anything but AVR, the micros_safe() macro is simply an alias for the normal micros()
   #define pinIsReserved(pin)  ( ((pin) == 0) ) //Forbiden pins like USB