This adds an interface to setup the PASID entries for first
level page table translation.

Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: NSanjay Kumar <sanjay.k.kumar@intel.com>
Signed-off-by: NLiu Yi L <yi.l.liu@intel.com>
Signed-off-by: NLu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: NAshok Raj <ashok.raj@intel.com>
Signed-off-by: NJoerg Roedel <jroedel@suse.de>