fold-vec-abs-int.p9.c: Add powerpc_p9vector_ok requirement.

fold-vec-abs-int.p9.c: Add powerpc_p9vector_ok requirement.

[testsuite]

2018-01-31  Will Schmidt  <will_schmidt@vnet.ibm.com>

	* gcc.target/powerpc/fold-vec-abs-int.p9.c: Add powerpc_p9vector_ok
	requirement.
	* gcc.target/powerpc/fold-vec-abs-int-fwrapv.p9.c: Same.
	* gcc.target/powerpc/fold-vec-cmp-char.p9.c: Same.
	* gcc.target/powerpc/fold-vec-neg-int.p9.c: Same.

From-SVN: r257335