Added fake EFUSE to atmega8 part.

This allows to have a common platform.txt recipe for all the ATMegaXX parts
in the Arduino IDE.

See:
arduino/Arduino#2075 (comment)
arduino/Arduino#2075

Author: cmaglie

avrdude-6.3-patches/61-avrdude-6.3-add_fake_efuse_to_atmega8_for_Arduino_IDE.patch

@@ -0,0 +1,16 @@
+--- avrdude.conf.in.orig	2016-12-16 13:08:00.210983367 +0100
++++ avrdude.conf.in	2016-12-16 13:10:44.691541657 +0100
+@@ -6548,6 +6548,13 @@
+                           "x x x x  x x x x   i i i i  i i i i";
+       ;
+ 
++    # Required for Arduino IDE
++    # see: https://github.com/arduino/Arduino/issues/2075
++    #      https://github.com/arduino/Arduino/issues/2075#issuecomment-238031689
++    memory "efuse"
++        size            = 0;
++      ;
++
+     memory "lock"
+         size            = 1;
+         min_write_delay = 2000;