DO NOT MERGE. Block adoptable storage when using FBE.

For adoptable storage and FBE to coexist we need a new dm-biocrypt
kernel feature which isn't ready yet.  So for now, prevent devices
from being adopted on FBE devices.

Bug: 30770036
Test: none
Change-Id: I51d54d2a8976ed02a03b107545aa094cf68df5d0
(cherry picked from commit 3b7f4b69)