Partial revert of revert of r361827: Add constrained intrinsic tests for powerpc64le.

The powerpc64-"nonle" tests are removed. They fail because of a bug that
Drew is currently working on that affects multiple targets.

Submitted by:	Drew Wock <drew.wock@sas.com>
Reviewed by:	Hal Finkel, Kevin P. Neal
Approved by:	Hal Finkel
Differential Revision:	http://reviews.llvm.org/D62388

llvm-svn: 361985