Merge remote-tracking branch 'origin/ue-usrp-tx-thread' into integration_2024_w50 (!3111)

Enable USRP Tx thread in nrUE

The option usrp-tx-thread-config 1 was not taking effect in UE. This MR fixes it.

executables/nr-ue.c

@@ -482,9 +482,6 @@ static void RU_write(nr_rxtx_thread_data_t *rxtxD, bool sl_tx_action)
 
   int tmp = openair0_write_reorder(&UE->rfdevice, proc->timestamp_tx, txp, rxtxD->writeBlockSize, fp->nb_antennas_tx, flags);
   AssertFatal(tmp == rxtxD->writeBlockSize, "");
-
-  for (int i = 0; i < fp->nb_antennas_tx; i++)
-    memset(txp[i], 0, rxtxD->writeBlockSize);
 }
 
 void processSlotTX(void *arg)
@@ -792,6 +789,8 @@ void *UE_thread(void *arg)
   UE->is_synchronized = 0;
   int tmp2 = UE->rfdevice.trx_start_func(&UE->rfdevice);
   AssertFatal(tmp2 == 0, "Could not start the device\n");
+  if (usrp_tx_thread == 1)
+    UE->rfdevice.trx_write_init(&UE->rfdevice);
 
   notifiedFIFO_t nf;
   initNotifiedFIFO(&nf);