[AArch64][NFC] Expand coverage of ReplaceWithVeclib testing using SLEEF vector library

This patch expands testing coverage for ReplaceWithVeclib pass
when SLEEF vector library is used. It adds testing for all LLVM
intrinsics which correspond to math functions from libm.

llrint, llround and lrint are not included as currently
IR verifier pass does not allow to use vector types with them.

Differential Revision: https://reviews.llvm.org/D155623