IB/hfi1: Get the hfi1_devdata structure as early as possible

Currently several things occur before the hfi1_devdata structure is
allocated.  This leads to an inconsistent logging ability and makes
it more difficult to restructure some code paths.

Allocate (and do a minimal init) the structure as soon as possible.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Sadanand Warrier <sadanand.warrier@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>