Update_verifier should read blocks in EIO mode

Update_verifier will reboot the device if it fails to read some blocks
on the care_map when veritymode=eio. Also make some partition name
changes to match the care_map.txt.

Test: Update_verifier reboots the device after read failures in eio mode.
Change-Id: Icf68e6151dee72f626a9ab72946100cf482a4e6c