- move .tbss to NOLOAD section
- remove xtensa-specific entities from riscv scripts
- explicit eh_frame terminator instead of "align magic"
- 80 characters line length limit
- refactor comments
- discard .rela sections (the rela data will go to relates sections)
There is no separate permission control peripheral in C6/H2/P4.
Memory protection is achieved using built-in PMA/PMP and hence
removing permission control specific files.
