Had to hack the code to schedule the prach.
Need to verify this is ok because ul_config = NULL.
Also had to change logic for calling fill_schedule_response.

However, we are not properly calling the
nr_ue_get_rach() function. The RA is being
properly initialized. In the nr_ue_get_rach()
the pRACH is not scheduled. Tried to add in
the scheduling of this, but it crashes here.
The other changes include revering the
nr_ue_get_rach() changes from previous commit.
Also, changed a few log levels and reverted
a previous change in the NR UE RRC layer that
was incorrect.

Several places where memory ownership was changed
and the original owner was not set to NULL. Also,
the transaction_identifier is now based on the
received dl_dcch_msg in the LTE UE. Still need to
fix the t_id for the NR UE. Also added comments for
RACH procedure in NR UE.

At the moment, the NSA mode worked once, but shows
unpredictable behavior. Other times it does not work.
In this commit I added several LOG_A messages for NSA
mode. Also removed old comments that were added during
development. Lastly, more comments for all the hacks
have been added.

The eNB may only check for RRC_Complete in EPC
mode. Need to look at this further. Updated how
we pass the RRC_Complete msg from NR UE to LTE UE.
Need to still handle transaction_id from dl_dcch_msg
in the LTE UE and trans_id from nr_dl_msg.

It is seg faulting at the moment.

However, the NR UE is crashing because it is receiving
a second RRCReconfig message from the LTE UE and it is
having trouble decoding it. Need to understand this.

Also, updated the DCCH decode message to use
the sdu_size not RRC_BUF_SIZE. This was a bug fix.

Also removed several warnings by properly
declaring nr-nFAPI functions and removed
declaration of unused functions. Also, reverted
eNB configuration file changes.

nFAPI library update from IISc

See merge request aburger/openairinterface5g!40

gNB is crashing when setting up the tunnel interface
between the NR UE and itself.

Also, 12 Frame triggering of MeasurementReport
is still in development and not working.

This caused the SCTP descriptor to be reset. This
made issues in the X2 interface between gNB and eNB.
Lots of logs added here. Need to fill NR_UE_Capability_Info
properly.

Now, we are able to fill the UE_Capability_Info that
the LTE UE and eNB are expecting. We then are able to
generate a RRC_DCCH_DATA_COPY_IND to trigger the
processing of the UE_Capability_Info (and sending the
info to the eNB). The info being received at eNB has not
been tested yet.
Also some code clean up.

The encode is still  working but now we need to
add in some new functionality to handle NR Capabilites.

Also updated the generate_nrMeasReport().
The uper_encode_to_buffer is still not working.

Also removed the [eNB_index + 1] saving/writing
in the process_MeasObj function. This indexing
was incorrect. Also cleaned up the code, fixed
ssRSRB -> ssbRSRP. Lastly, added assertFatals
around indexing in process_measObj function.

Added check and logs. If we change ind = 1 it
crashes the LTE UE so we log for now. Also cleaned
up a lot of the code. Lastly, we set freed vars to NULL.