[AArch64] Create feature set for Samsung Exynos-M2

Since Exynos-M2 improved the FP square root unit a bit over the one in
Exynos-M1, it does not benefit from using the Newton series for such
operations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285246 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed