Add Realme X7 Max markdown

Signed-off-by: ManshuTyagi <himanshut567@gmail.com>
Change-Id: Ie20e3413b8a6a5e18d88f8887e1fc28e79acd715
diff --git a/_realme/realmex7max.markdown b/_realme/realmex7max.markdown
new file mode 100644
index 0000000..966b627
--- /dev/null
+++ b/_realme/realmex7max.markdown
@@ -0,0 +1,22 @@
+---
+layout: device
+title:  "Realme X7 Max"
+codename: RMX3031
+downloadfolder: RMX3031
+supportstatus: Current
+maintainer: ManshuTyagi
+devicetree: https://github.com/TeamWin/android_device_realme_RMX3031
+oem: Realme
+---
+
+{% include disclaimer.html %}
+
+{% include supportstatus.html %}
+
+{% include appinstall.html %}
+
+{% include download.html %}
+
+{% include avb.html %}
+
+{% include twrpinstall.html %}