tree 00ad67ad7ebf6e81d7263b305ca111fb283078ad
parent 556886041b9d60a9bb662e6ab8b96d9b9b52fc95
author Kever Yang <kever.yang@rock-chips.com> 1554208881 +0800
committer Kever Yang <kever.yang@rock-chips.com> 1557308052 +0800

arm: add a separate stack for TPL

TPL stack may different from SPL and sys stack, add support for
separate one when the board defines it.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>