[Driver] Add "did you mean?" suggestions to -cc1as

[Driver] Add "did you mean?" suggestions to -cc1as

Summary:
In https://reviews.llvm.org/D41733, the driver was modified such that,
when a user provided a mispelled option such as `-hel`, it would
suggest a valid option with a nearby edit distance: "did you mean
'-help'?".

Add these suggestions to invocations of `clang -cc1as` as well.

Test Plan: `check-clang`

Reviewers: v.g.vassilev, bruno

Reviewed By: v.g.vassilev

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D42001

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@322445 91177308-0d34-0410-b5e6-96231b3b80d8