merge almost duplicated code for ru prach list and gNB prach list

(gNB is not the proper name, it is CU+DU, gNB is RU+CU+DU)

openair1/PHY/INIT/nr_init.c

@@ -192,7 +192,7 @@ void phy_init_nr_gNB(PHY_VARS_gNB *gNB)
   // PRACH
   prach_vars->rxsigF = (int16_t **)malloc16_clear(Prx * sizeof(int16_t *));
 
-  init_prach_list(gNB);
+  init_prach_list(&gNB->prach_vars.list, prach_upper);
 
   int N_RB_UL = cfg->carrier_config.ul_grid_size[cfg->ssb_config.scs_common.value].value;
   int n_buf = Prx*max_ul_mimo_layers;

openair1/PHY/INIT/nr_init_ru.c

@@ -27,8 +27,6 @@
 #include <math.h>
 #include "openair1/PHY/defs_RU.h"
 
-void init_prach_ru_list(RU_t *ru);
-
 void nr_phy_init_RU(RU_t *ru)
 {
   NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
@@ -132,7 +130,7 @@ void nr_phy_init_RU(RU_t *ru)
     LOG_D(PHY, "[INIT] %s() ru->num_gNB:%d \n", __FUNCTION__, ru->num_gNB);
   } // !=IF5
 
-  init_prach_ru_list(ru);
+  init_prach_list(&ru->prach_list, prach_lower);
 }
 
 void nr_phy_free_RU(RU_t *ru)