Update Multi.txt

add FX_BM26 subprotocol

Author: rdba2k

Multiprotocol/Multi.txt

@@ -55,7 +55,7 @@
 55,Frsky_RX,Multi,CloneTX,EraseTX,CPPM
 56,AFHDS2A_RX,Multi,CPPM
 57,HoTT,Sync,No_Sync
-58,FX,816,620,9630,Q560,QF012
+58,FX,816,620,9630,Q560,QF012,BM26
 59,Bayang_RX,Multi,CPPM
 60,Pelikan,Pro,Lite,SCX24
 61,EazyRC
@@ -102,3 +102,4 @@
 104,KAMTOM
 105,Shenqi2
 106,WL91x
+