Add device: Xiaomi Mi Mix 2

* Made sure that decryption works with MIUI as unofficial TWRPs on xda has issues with that.

Change-Id: I132097a4441e82eaa593984fde1de80a30a8be50
diff --git a/_xiaomi/xiaomimimix2.markdown b/_xiaomi/xiaomimimix2.markdown
new file mode 100644
index 0000000..dc2082c
--- /dev/null
+++ b/_xiaomi/xiaomimimix2.markdown
@@ -0,0 +1,24 @@
+---
+layout: device
+title:  "Xiaomi Mi Mix 2"
+codename: chiron
+downloadfolder: chiron
+supportstatus: Current
+maintainer: blankaf
+devicetree: https://github.com/TeamWin/android_device_xiaomi_chiron
+oem: Xiaomi
+---
+
+{% include disclaimer.html %}
+
+{% include supportstatus.html %}
+
+{% include xiaomiunlock.html %}
+
+{% include appinstall.html %}
+
+{% include download.html %}
+
+{% include twrpinstall.html %}
+
+{% include fastbootinstall.html %}