While redhat-rpm-config's config.* are newer, rpm's should at least support all RHEL architectures, including ppc64le (as of 7.1). Currently, rpm's config.guess does not, leading to spec incompatibilities between Fedora and EPEL as in bug 1198717 comment 4. Please update rpm config.guess for ppc64le.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2016-2359.html