the new cpu opp table in 4.19 now supports frequencies up to 1.368GHz, so this change
updates the 1.3GHz overclock overlay as appropriate. overlay name has been changed
to "cpu-clock-1.3GHz-1.3v" as this overlay is only needed for boards that provide a
fixed-voltage GPIO regulator/switcher that operate at 1.1v/1.3v.