MR968: Bugfix nr ldpc size typo
- fix the copy of the decoded data bytes at the end of the processing of an LDPC segment 
 
MR962: Remove x2 gnb hardcoding
- Removes hardcoding of some x2 configuration parameters used in ENDC setup request message at gNB side  

MR949: rlc v2: change time keeping
- RLC has timers. We need to keep track of time. 
We introduce rlc_tick() and call it in eNB_dlsch_ulsch_scheduler, which is called every subframe, both in FDD and TDD.

(cherry picked from commit 175c59ae3aedf612777cd1c8c88b6d6f254b9334)

(cherry picked from commit cf8f14edf4a261e1df72579423786d39ba6d97f9)

(cherry picked from commit 04c5431468c9102dd625a73d9e5219b40b638fe3)
(cherry picked from commit 17880778c848406e562f98c20f7b7a6428502279)
(cherry picked from commit a26f44c197e854dd4261267a3695932392f09265)

(cherry picked from commit 57caca9ba87fda3f73aa30d86f4af01a6062224c)

(cherry picked from commit 6d5a40bd826de160ddf55599f61d1359cfba3fa4)

(cherry picked from commit 5482843b9a9dfd25abe74afb04a40c117da3bac4)

(cherry picked from commit 3bed7dc69db8dc43b28b62553f12834efbca349b)

(cherry picked from commit 51634853671e07ef3013bc44ec79fc38c0646147)

(cherry picked from commit 0622f7d40523e39334708ce4b9b0ee68e8fb2bf1)

(cherry picked from commit de93d8f0aa9e6d7380bd159901a41aa36f257298)

(cherry picked from commit 120ea0950e1f52c1c5dd1d0dd4f7080e66d7ee93)

(cherry picked from commit 6f3d14e74663e75f2eaf3cd1c1348d5d028e3379)