BugLink: http://bugs.launchpad.net/bugs/1558624

Provide a user space interface to issue call logical-processor instructions.
Only selected CLP commands are allowed, enough to get the full overview of
the installed PCI functions.
Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
(cherry picked from commit 988b86e6)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>