arm: Conform to libpayloads cache API changes

This patch adapts depthcharge to use the new cache_sync_instructions()
function provided by libpayload (which hides the architecture-specific
steps that you need to take before trying to execute code that has just
been written to memory).

CQ-DEPEND=CL:183890
BUG=None
TEST=None

Change-Id: Ibf3ed590d172993febc2ca5de804383593721c78
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/183877
Reviewed-by: Stefan Reinauer <reinauer@google.com>
3 files changed