Provide alternate SE RoT provisioning path.

On some devices it is infeasible to provision the KeyMint RoT bits in
the Android Bootloader.  This provides an alternate path to provision
them from the TEE during early boot.

Bug: 219076736
Test: VtsAidlKeyMintTargetTest
Change-Id: If69f7e25e58edbf4d2190084e2c0a03a94bfa5d6
Merged-In: If69f7e25e58edbf4d2190084e2c0a03a94bfa5d6
4 files changed