ARM: update even more tests

More updating of tests to be explicit about the target triple rather than
relying on the default target triple supporting ARM mode.

Indicate to lit that object emission is not yet available for Windows on ARM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205545 91177308-0d34-0410-b5e6-96231b3b80d8