arm: libpayload: Make cache invalidation take pointers instead of integers

This minor refactoring patch changes the signature of all limited cache
invalidation functions in Coreboot and libpayload from unsigned long to
void * for the address argument, since that's really what you have in
95% of the cases and I think it's ugly to have casting boilerplate all
over the place.

CQ-DEPEND=CL:167358
BUG=chrome-os-partner:21969
TEST=Make sure all payloads still compile cleanly when this and
dependent changes are in.

Change-Id: Ic9d3b2ea70b6aa8aea6647adae43ee2183b4e065
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/167338
6 files changed