tree 5baf8f578458a6965447c5518ee587d1a9d3c453
parent 2bbbd06a8a4a104f4f0ca86057a15bae828dc997
author Bowgo Tsai <bowgotsai@google.com> 1530238534 +0800
committer Bowgo Tsai <bowgotsai@google.com> 1530239763 +0800

Add /mnt/product rw mount point for product partitions.

1. init creates /mnt/product used to mount product-specific rw partitions.
2. If a device tree fstab entry for early mount specifies a mount point
   under /mnt/product e.g. /mnt/product/foo, init will create
   /mnt/product/foo mount point.

Bug: 110808288
Test: change dt fstab entry to mount /mnt/product/foo; mount point is
      created correctly, and partition is mounted in early mount.

Change-Id: I321e314992abe1084fd67a382c205f5c0c92bf3d