ANDROID: remove erraneous avb logs

The AVB verify calls incorrectly attempt to read out boot, vendor_boot,
and init_boot when verifying the second disk that doesn't contain these
partitions.

Guard those reads with a check for the corresponding partitions.

Bug: 211928168
Test: cuttlefish boot with locked config
Change-Id: I2f01a3c6435b1b14b1c657e67d9d89582c31282d
1 file changed