Add rng seeder to keep random device full

Change-Id: I9a6d7446e2df06778faed5b5a851260fae7d2771
Recovery changes for 2M partition alignment

Change-Id: I11e98c5c83891a21b96bfd0c07909512d236ef04
Hide /rom and /factory to prevent accidental reformat

Change-Id: I33db31e7027f011d65316882b5bf81f468e26577
Massage storage settings to better reflect reality.

Change-Id: I7161d54ee9ca7e0dac252a9313c78b47f8b6a0f8