[libspirv] Use clc functions for __spirv_All/Any (#22105)
They are now implemented with @llvm.vector.reduce.and/or, which can map
to native hardware instruction. Example llvm-diff changes (> is
reference): in function _Z11__spirv_AllDv2_c:
> %2 = extractelement <2 x i8> %0, i64 0
> %3 = extractelement <2 x i8> %0, i64 1
> %4 = and i8 %2, %3
< %2 = tail call i8 @llvm.vector.reduce.and.v2i8(<2 x i8> %0)
in function _Z11__spirv_AnyDv2_c:
> %2 = extractelement <2 x i8> %0, i64 0
> %3 = extractelement <2 x i8> %0, i64 1
> %4 = or i8 %2, %3
< %2 = tail call i8 @llvm.vector.reduce.or.v2i8(<2 x i8> %0)
