Merge changes from topic "ea/corstone1000" into integration

* changes:
  feat(corstone1000): identify bank to load fip
  fix(corstone1000): change base address of FIP in the flash
  feat(corstone1000): implement platform specific psci reset
  feat(corstone1000): made changes to accommodate 3MB for optee
  build(corstone1000): rename diphda to corstone1000