Update Xiaomi Mi 5 device page

* Add Xiaomi bootloader unlocking instructions
* Include link to the newly created XDA support thread

Change-Id: Ia84d39eac60622666c95dd22f878d5a54e9c7467
diff --git a/_devices/xiaomimi5.markdown b/_devices/xiaomimi5.markdown
index 0bfb840..3d9907c 100644
--- a/_devices/xiaomimi5.markdown
+++ b/_devices/xiaomimi5.markdown
@@ -7,12 +7,15 @@
 maintainer: Bruno Martins (bgcngm), Louis Popi (h2o64)
 oem: Xiaomi
 devicetree: https://github.com/TeamWin/android_device_xiaomi_gemini
+xdathread: "http://forum.xda-developers.com/mi-5/development/recovery-twrp-xiaomi-mi-5-t3412123"
 ---
 
 {% include disclaimer.html %}
 
 {% include supportstatus.html %}
 
+{% include xiaomiunlock.html %}
+
 {% include appinstall.html %}
 
 {% include download.html %}