Merge changes from topic "tftf_refactor"

* changes:
  refactor(neoverse_rd): introduce flash and ros macros
  refactor(neoverse_rd): introduce timer and watchdog macros
  refactor(neoverse_rd): define naming convention for CSS macros
  refactor(neoverse_rd): remove deprecated header files
  refactor(neoverse_rd): refactor header files for second gen platforms
  refactor(neoverse_rd): refactor header files for first gen platforms