ANDROID: trusty: Add trusty-test driver

Tests shared memory interface with a stdcall.

Original commits:
  android-trusty-4.19:
    3b73c0e9 ("trusty: Add stdcalltest")
  android-trusty-5.4:
    8a71ae51 ("ANDROID: trusty: Fix uninitialized variable in trusty-test.c")
    4af2d72a ("ANDROID: trusty: Modularize trusty-test driver")
    2a2f4891 ("ANDROID: trusty: add missing 'static' keywords")
    eaa27254 ("ANDROID: trusty: don't use '#pragma once'")
    110d7254 ("ANDROID: trusty: remove unneeded assignments to device_driver::owner")
    af1cbcb4 ("ANDROID: trusty-test: use dev_groups for trusty_test_run attribute")
    0f32db5e ("ANDROID: trusty: remove trivial function entry logging")
    3f6ac3c6 ("ANDROID: trusty: Kconfig: add help text")

Bug: 147322844
Change-Id: I382083860079e0e85cb2a0fd7549a200145d46a7
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Tri Vo <trong@google.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>