tree 63ec7ae868aeaeb76ae6b31444ae3d5978fe4bd0
parent 785365b2f7baebe4e5fda619306d6c0dbc42ab46
author Shawn Willden <swillden@google.com> 1516637312 -0700
committer Shawn Willden <swillden@google.com> 1516936482 -0700

Support Keymaster4

This CL changes vold from using a KM3 device directly to using the KM4
support wrapper from the KM4 support library, which supports both KM3
and KM4 devices (KM0, 1 and 2 devices are still supported as well,
because the default KM3 device is a wrapper that uses them).

In addition, I found myself getting confused about which "Keymaster"
types were locally-defined vold keymaster types and which were from
the KM4 HAL and support library, so I changd the approach to
referencing the latter, so all of them are qualified with the "km::"
namespace reference.

Test: Build & boot
Change-Id: I08ed5425641e7496f8597d5716cb3cd0cbd33a7f