making nvIPC thread more configurable + cleanup

making aerial shm prefix configurable (so we can use muliptle VNFs per PNF)
making the nvipc thread affinity configurable and using threadCreate.
removing aerial_vnf_nr_aerial_p7_start_thread

radio/COMMON/common_lib.h

@@ -336,6 +336,11 @@ typedef struct {
   uint8_t if_compress;
 } eth_params_t;
 
+typedef struct {
+  char *nvipc_shm_prefix;
+  int8_t nvipc_poll_core;
+} nvipc_params_t;
+
 typedef struct {
   //! Tx buffer for if device, keep one per subframe now to allow multithreading
   void *tx[10];