The TX correlation calculation incremented the pointer over the outer
TX antenna inside the inner TX antenna loop.  Incrementing the pointer
in the outer loop instead prevents overflowing.

These include:
- Simplifying VNF code.
- Adding comments to several areas of the code.
- Using free_and_zero macros
- Fixing spelling errors

get_index_for_dmrs_lowpapr_seq() was accessing the array dmrs_ul_allocated_res[] out of bounds.

except for:
- config module

Except for:
- polar code