added missing files

common/utils/lte/prach_utils.h

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file common/utils/prach_utils.h
+* \brief computation of some PRACH variables used in both MAC and PHY 
+* \author R. Knopp
+* \date 2020
+* \version 0.1
+* \company Eurecom
+* \email: raymond.knopp@eurecom.fr, florian.kaltenberger@eurecom.fr, oscar.tonelli@yahoo.it
+* \note
+* \warning
+*/
+uint8_t get_prach_fmt(int prach_ConfigIndex,int frame_type);
+
+uint8_t get_prach_prb_offset(int frame_type,
+                             int tdd_config,
+                             int N_RB_UL,
+                             uint8_t prach_ConfigIndex,
+                             uint8_t n_ra_prboffset,
+                             uint8_t tdd_mapindex, uint16_t Nf);
+int is_prach_subframe0(int tdd_config,int frame_type,uint8_t prach_ConfigIndex,uint32_t frame, uint8_t subframe);