OpenBSD: Make OpenBSD 4.7 param headers consistent

OpenBSD: Make OpenBSD 4.7 param headers consistent

OpenBSD follows the policy of using a separate common
param file (post 1.4.x). However, when introducing support
for i386 OpenBSD 4.7, this was not done and a single param
config header file was created instead. This patch changes
the param files for OpenBSD 4.7 so that they are
consistent with the other OpenBSD versions by using a
separate common param header file.

Reviewed-on: http://gerrit.openafs.org/3725
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit cd6bd75d1c97ce87ab1597d80fcd3cee2ea18825)

Change-Id: I5845e68f3fd7fac905993a0ac7a371e058c9a618
Reviewed-on: http://gerrit.openafs.org/3920
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>