Move new test from Generic to SystemZ.

A few build bots failed with r323042 because they are not configured to
build the SystemZ target.

llvm-svn: 323044

diff --git a/llvm/test/CodeGen/Generic/store_nonbytesized_vecs.ll b/llvm/test/CodeGen/SystemZ/store_nonbytesized_vecs.ll
similarity index 100%
rename from llvm/test/CodeGen/Generic/store_nonbytesized_vecs.ll
rename to llvm/test/CodeGen/SystemZ/store_nonbytesized_vecs.ll