s390x/ioinst: advertise fcs facility

As we provide format 1 chsc scpd data (and don't support any ficon
channels), we de facto already have the ficon-cascaded-switch
facility.
Reviewed-by: NPierre Morel <pmorel@linux.vnet.ibm.com>
Reviewed-by: NHalil Pasic <pasic@linux.vnet.ibm.com>
Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>

target-s390x/ioinst.c

@@ -508,7 +508,7 @@ static void ioinst_handle_chsc_scsc(ChscReq *req, ChscResp *res)
     memset(chsc_chars, 0, sizeof(chsc_chars));
 
     general_chars[0] = cpu_to_be32(0x03000000);
-    general_chars[1] = cpu_to_be32(0x00059000);
+    general_chars[1] = cpu_to_be32(0x00079000);
     general_chars[3] = cpu_to_be32(0x00080000);
 
     chsc_chars[0] = cpu_to_be32(0x40000000);