Support writing/reading 2nd IMEI in storage

Bug: 265381212
Test: Ran `com.android.trusty.rust.keymint.test`
Change-Id: Ib1696a9af3d7e70689e45f07504e748b9c67139d
Signed-off-by: Donnie Pollitz <donpollitz@google.com>
3 files changed