Trusty Keymaster@4.0

Adds support for proxying V4.0 commands to Trusty and makes 4.0 the
default when including trusty-base.mk.

Bug: 128851722
Test: Keymaster VTS 4.0 + Trusty
Change-Id: I2e2220963996fcb88d6953ee1a58af1b947b857d
7 files changed