Added end of life status to board

Author: jhansson-ard

content/hardware/02.hero/boards/yun-rev2/product.md

@@ -2,6 +2,7 @@
 title: Yún Rev2
 url_shop: https://store.arduino.cc/arduino-yun-rev-2
 core: arduino:avr
+status: end-of-life
 ---
 
-The Yún Rev2, Linux powered board with the Arduino simplicity, is the perfect board for your IoT projects!
+The Yún Rev2, Linux powered board with the Arduino simplicity, is the perfect board for your IoT projects!