arm64: remove ARCH_ARM64_CORTEX_A57_POWER_DOWN_SUPPORT

With the removal of secmon from coreboot there are no
power down operations required. As such remove the
A57 power down support.

Change-Id: I8eebb0ecd87b5e8bb3eaac335d652689d7f57796
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11898
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

0 files changed, 0 insertions, 0 deletions