tree 12fd299e1333feb82157b245d8fd38e08f0967e6
parent 098e79a0c348d2636fd102db081b4e03cb30ef9d
author Kelvin Zhang <zhangkelvin@google.com> 1604602320 -0500
committer Kelvin Zhang <zhangkelvin@google.com> 1606160957 -0500

Do not map dynamic partitions on VABC devices

With VABC, we no longer need to map all partitions before
reading/writing, so don't try to map them.
1. modify GetPartitionDevice to return empty path for target partitions
on VABC
2. Add a separate GetMountableTargetDevice for obtaining a mountable
device path, specifically for postinstall

Test: treehugger
Change-Id: Ib1f608914fc49c677ce7389140ca79b028171191