align the buffer to 256-bit

Refactor, write a new inner_rx()
Performance, Do unscrambling in thread

issue still with nr_ulsim (Bus Error on aarch64)

optimizations for 128-bit to improve performance of LDPC encode/decode
on aarch64 (Neoverse 1)

integration_2023_w14

See merge request oai/openairinterface5g!2048

* !1861 NR UE RX Multi-threading
* !2017 scheduling aperiodic SRS at UE
* !2046 Correctly allocate GUTI in NAS UE structures
* !2033 PBCH radio link failure detection at MAC
* !1959 bugfix: change memory management of interface between PHY and MAC scheduler
* !2041 hack: see "Bye." message when quitting gnb running with aw2s
* !2047 NR RRC - RRCReestablishment - Fix MultiplePDU Regression

Merge remote-tracking branch 'origin/nr-rrcreestablishment-fix-multipdu-proper-commits' into integration_2023_w14

Changes
1. Passing function argument  by reference.
2. Use a pointer for ue->established_drbs[drb_id - 1] in generateDRB.