Integration 2020 wk51 2
MR991: Remove hack in LTE PDCP for noS1 mode
MR993: UL and DL fixes LDPC short codewords
MR1000: doc: fix build directory in BASIC_SIM.md
MR991: Remove hack in LTE PDCP for noS1 mode
MR993: UL and DL fixes LDPC short codewords
MR1000: doc: fix build directory in BASIC_SIM.md