add usrpx300 cnf

targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band77.fr1.273PRB.usrpx300.conf

@@ -218,7 +218,7 @@ RUs = (
   ##beamforming 1x2 matrix: 1 layer x 2 antennas
   bf_weights = [0x00007fff, 0x0000];
   #clock_src = "internal";
-  sdr_addrs = "addr=192.168.30.2,second_addr=192.168.40.2,clock_source=internal,time_source=internal"
+  sdr_addrs = "addr=192.168.40.2,second_addr=192.168.40.2,clock_source=internal,time_source=internal"
 }
 );