add xiaomi sm8350 devices

Change-Id: I895db74e1087b8200c5be9e6b8b8c60cca7cbdec
diff --git a/_xiaomi/xiaomiredmik40pro.markdown b/_xiaomi/xiaomiredmik40pro.markdown
new file mode 100644
index 0000000..4172e05
--- /dev/null
+++ b/_xiaomi/xiaomiredmik40pro.markdown
@@ -0,0 +1,23 @@
+---
+layout: device
+title:  "Xiaomi Redmi K40 Pro"
+codename: haydn
+oem: Xiaomi
+downloadfolder: haydn
+supportstatus: Current
+maintainer: Nebrassy
+devicetree: "https://github.com/TeamWin/android_device_xiaomi_haydn"
+xdathread: "https://forum.xda-developers.com/t/recovery-11-official-teamwin-recovery-project.4374115/"
+---
+
+{% include disclaimer.html %}
+
+{% include supportstatus.html %}
+
+{% include xiaomiunlock.html %}
+
+{% include dynamicpartitions.html %}
+
+{% include download.html %}
+
+{% include fastbootabinstall.html %}