[Merge] lp:~dannf/ubuntu/trusty/base-installer/arm64+calxeda-subarches into lp:ubuntu/base-installer

[Colin Watson]

Review: Disapprove

I believe the highbank/midway changes in libd-i didn't actually work out that way (they seem to be generic now), so rejecting this in favour of https://code.launchpad.net/~dannf/ubuntu/trusty/base-installer/arm64/+merge/199972.  Let me know if that's wrong.
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https://code.launchpad.net/~dannf/ubuntu/trusty/base-installer/arm64+calxeda-subarches/+merge/199977
Your team Ubuntu branches is requested to review the proposed merge of lp:~dannf/ubuntu/trusty/base-installer/arm64+calxeda-subarches into lp:ubuntu/base-installer.