app: aboot: dm-verity's EIO mode is not applicable for AVB2.0

With AVB 2.0 feature enabled, all dm-verity errors are treated as
critical and is never allowed to boot. This change limits EIO errors to
legacy verified boot version where device is allowed to boot in logging
mode.

Change-Id: Ibeb5d6aafaf4ec66bcd47908c18aa960cc9e0941
1 file changed