p8-vec-xl-xst.c: Fix target string to LE-only.

2017-05-22  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* gcc.target/powerpc/p8-vec-xl-xst.c: Fix target string to
	LE-only.

From-SVN: r248348

gcc/testsuite/ChangeLog

+2017-05-22  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
+
+	* gcc.target/powerpc/p8-vec-xl-xst.c: Fix target string to
+	LE-only.
+
 2017-05-22  Janus Weil  <janus@gcc.gnu.org>
 
 	PR fortran/80766

gcc/testsuite/gcc.target/powerpc/p8-vec-xl-xst.c

-/* { dg-do compile { target { powerpc*-*-* } } } */
+/* { dg-do compile { target { powerpc64le-*-* } } } */
 /* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
 /* { dg-require-effective-target powerpc_p8vector_ok } */
 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=power8" } } */