Merge pull request arduino#4547 from feilipu/master

Added to #define for 1284/1284p Timer 3 inclusion.

Author: facchinm

libraries/Servo/src/avr/ServoTimers.h

@@ -47,7 +47,7 @@ typedef enum { _timer1, _Nbr_16timers } timer16_Sequence_t;
 #define _useTimer1
 typedef enum { _timer3, _timer1, _Nbr_16timers } timer16_Sequence_t;
 
-#elif defined(__AVR_ATmega128__) ||defined(__AVR_ATmega1281__)||defined(__AVR_ATmega2561__)
+#elif defined(__AVR_ATmega128__) || defined(__AVR_ATmega1281__) || defined(__AVR_ATmega1284__) || defined(__AVR_ATmega1284P__) || defined(__AVR_ATmega2561__)
 #define _useTimer3
 #define _useTimer1
 typedef enum { _timer3, _timer1, _Nbr_16timers } timer16_Sequence_t;