[LV] Rename StrideAccesses to AccessStrideInfo (NFC)

We now collect all accesses with a constant stride, not just the ones with a
stride greater than one. This change was requested in the review of D19984.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275473 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed