Merge remote-tracking branch 'origin/new-gtpu' into integration_2020_wk15

Conflicts:
	cmake_targets/CMakeLists.txt
	openair1/PHY/TOOLS/time_meas.h
	openair2/LAYER2/PDCP_v10.1.0/pdcp_fifo.c
	openair2/LAYER2/RLC/rlc.h

executables/nr-softmodem.c

@@ -85,6 +85,7 @@ unsigned short config_frames[4] = {2,9,11,13};
 #include "x2ap_eNB.h"
 #include "ngap_gNB.h"
 #include "gnb_paramdef.h"
+#include <openair3/ocp-gtpu/gtp_itf.h>
 #include "nfapi/oai_integration/vendor_ext.h"
 
 pthread_cond_t nfapi_sync_cond;
@@ -179,7 +180,6 @@ extern void *udp_eNB_task(void *args_p);
 int transmission_mode=1;
 int emulate_rf = 0;
 int numerology = 0;
-int usrp_tx_thread = 0;
 
 
 static char *parallel_config = NULL;