[GHC] #10525: Enable SMP and GHCI on aarch64 in 7.10.2

[GHC]

#10525: Enable SMP and GHCI on aarch64 in 7.10.2
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              Reporter:  nomeata     |             Owner:
                  Type:  bug         |            Status:  new
              Priority:  normal      |         Milestone:  7.10.2
             Component:  Compiler    |           Version:  7.10.1
              Keywords:              |  Operating System:  Unknown/Multiple
          Architecture:              |   Type of failure:  None/Unknown
  Unknown/Multiple                   |        Blocked By:
             Test Case:              |   Related Tickets:
              Blocking:              |
Differential Revisions:              |
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 Given that the patches from #9673 were merged as well, it would be nice to
 have https://phabricator.haskell.org/D859 i.e.
 changeset:1e8c9b81a819da8eb54405a029fc33a9f5220321/ghc included in 7.10.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10525>
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