3GPP 38.331: If absent, the UE applies the SCS as derived from the prach-ConfigurationIndex in RACH-ConfigGeneric (see tables Table 6.3.3.1-1, Table 6.3.3.1-2, Table 6.3.3.2-2 and Table 6.3.3.2-3, TS 38.211 [16]).

This procedure for msg1_SubcarrierSpacing NULL is not implemented, so we aplly the same value of UL SCS.

These functions look up the numerology, and code can be harmonized:

- ssb_index_from_prach()
- find_SSB_and_RO_available()
- schedule_nr_prach()

The next commits also need to look up the numerology from the
UplinkConfigCommon. This provides the common implementation to be used
in follow-up commits.

Integration: `2024.w40b`

See merge request oai/openairinterface5g!3021

* !2890 F1AP encoding/decoding library
* !2969 Time domain samples scope for NR UE & gNB
* !2998 warmup RF board in UE
* !3009 Fix the ratio of PDSCH EPRE to DM-RS EPRE
* !2965 Refactoring of prepare_scc in gNB config
* !3002 CI: Change frequency used by AW2S pipeline
* !3007 Enable gNB configuration through YAML file
* !3001 Minor ue fixes
* !2971 Use getaddrinfo() when connecting to rfsimulator

- Remove double "Connection ... established" (already printed in
  caller)
- Remove useless, there is already the logging module
- Print getaddrinfo() error as LOG_E (error)

the code creates a sink to read all traced packets and drop it.  but
this works only if we send to a local address and if there is not
another sink (like if we trace both UE and gNB in the same machine).
this sink's purpose is only to prevent to get automatic packets back
from the kernel saying "no listener". So, instead of killing the trace
when we can't create the sink (as done previously), we now just let the
trace in operation.

Integration: `2024.w40`

Closes #756 and #849

See merge request oai/openairinterface5g!3014

* !2886 (doc): Added a new doc on hardware requirements
* !2955 dockerized clang-format error detection tool
* !3005 Fix symbol size in nr_dlsch_mmse
* !2930 SRS tx power
* SA-B200-Module-SABOX pipeline: improve radio
* SA-AW2S-CN5G: accept 5% ping packet loss
* !3003 Resolve "SEGFAULT in L1_rx_thread" - CI
* !3016 fix tests for log2_approx and log2_approx64
* patch to move RFsim-4G to cacofonix