Revert "[AArch64] Change the preferred alignment for char and short to word alignment"
Revert "[AArch64] Change the preferred alignment for char and short to word alignment"

This reverts commit r273280 as the change was not properly approved.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@274766 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang