LU-8661 libcfs: handle pdata_set_cpumasks() removal

LU-8661 libcfs: handle pdata_set_cpumasks() removal

In Linux commit 815613da6a67c196d7458d0e6c278ea88e21933f the
function padata_set_cpumasks was removed since no one was
using it upstream. In order to support newer kernels we need
to migrate to pdata_set_cpumask() instead.

Change-Id: Ia2e5143d9a2649bfbf9e1df1fb7f2d1b3c807884
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: https://review.whamcloud.com/27422
Tested-by: Jenkins
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>