selinux: Add tegra policies

Change-Id: I449139424c1002e4c266c451d9b96139cca054b0
Apply x3-specific selinux policies

Change-Id: I3836772fbcaad3062de1665081789a7357bbaa83
Undo some file relocations

Change-Id: Id100eafed329f92ab415819564b65fff5594a8fb