Revert "fs_mgr: Remove blatant references to retrofit dynamic partitions."

This reverts commit d3340d7fd38ac8090e0fba96f98af15fac96905d.

Reason: Several 4.14 and 4.19 shipping devices use this.
Change-Id: If077907f0dbf66af7b2a09c3cd01905078b3f95a
10 files changed