[AArch64] Consider all vector types for FeatureSlowMisaligned128Store

The original code considered only v2i64 as slow for this feature. This patch
consider all 128-bit long vector types as slow candidates.

In internal tests, extending this feature to all 128-bit vector types
resulted in an overall improvement of 1% on Exynos M1.

Differential revision: https://reviews.llvm.org/D27998

llvm-svn: 291616