[gnoduino] set correct max size for mega2560 (to address issue #2277)

[Lucian Langa <lucilanga src gnome org>]

commit 349aeded8fdb11cf737bf9ea39149c0591a2c5b7
Author: Arnav Gupta <championswimmer gmail com>
Date:   Sun Sep 21 17:10:06 2014 +0530

    set correct max size for mega2560 (to address issue #2277)
    
    Signed-off-by: Arnav Gupta <championswimmer gmail com>

 hardware/arduino/boards.txt |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/hardware/arduino/boards.txt b/hardware/arduino/boards.txt
index b0414ec..342c66c 100644
--- a/hardware/arduino/boards.txt
+++ b/hardware/arduino/boards.txt
@@ -107,7 +107,7 @@ nano.build.variant=eightanaloginputs
 mega2560.name=Arduino Mega 2560 or Mega ADK
 
 mega2560.upload.protocol=wiring
-mega2560.upload.maximum_size=258048
+mega2560.upload.maximum_size=253952
 mega2560.upload.speed=115200
 
 mega2560.bootloader.low_fuses=0xFF