sepolicy: Add new crypto type ro.crypto.type=managed

This type is used when device encryption is managed by the host system.
(e.g. ARC++)
Please see b/136127632#comment10 for the reason why we introduce this.

Bug: 169207445
Test: m
Change-Id: I8c4eaa57389e591b2c520b59bb95408d43daf22c
1 file changed