Merge changes from topic "shewan01/tftf-nrd1-deprecation"

* changes:
  feat(neoverse_rd): deprecate and remove NRD1 platform includes
  feat(neoverse_rd): deprecate and remove RD-V1 platform variants
  feat(neoverse_rd): deprecate and remove RD-N1-Edge platform variants
  feat(neoverse_rd): deprecate and remove SGI-575 platform