Rename "rollback index slot" to "rollback index location".

This is because the word slot is already used in the context of
A/B. Less confusing this way.

Bug: 33100927
Test: New unit tests and all unit tests pass.
Test: Manually tested on UEFI based bootloader.

Change-Id: Ic611b02dc18e7dd9f14c2c87b247be3cd8f4aaf2
14 files changed
tree: 5077ef6ef239809b9b933478d6d6186fc5e55d2e
  1. boot_control/
  2. libavb/
  3. libavb_ab/
  4. test/
  5. Android.mk
  6. avbtool
  7. LICENSE
  8. README