Re-include RMX1992 in the Unified Realme X2 TWRP

Change-Id: I7c5683c02ff1cdd8dadc4480813c4be0f3ceb618
diff --git a/_realme/realmex2.markdown b/_realme/realmex2.markdown
index c48cbe9..f679668 100644
--- a/_realme/realmex2.markdown
+++ b/_realme/realmex2.markdown
@@ -1,7 +1,7 @@
 ---
 layout: device
 title:  "Realme X2"
-codename: RMX1991/RMX1993
+codename: RMX1991/RMX1992/RMX1993
 downloadfolder: RMX1991
 supportstatus: Current
 maintainer: Mauronofrio