AParcel_markSensitive in APEX

libbinder_rs needs this for use in an APEX.

Fixes: 190995136
Test: libbinder_ndk_unit_test (this test is in VTS - the name may be
  misleading - it does use binder, but it doesn't test other services)
Change-Id: Ib27a889ad53024f11a4780ac588bedb9a77d5a4b