super1: Add support for multiple-ppls

super1: Add support for multiple-ppls

Add support for super1 with multiple ppls. Extend ppl area size to 1MB.
Use 1MB as default during creation. Always start array as single ppl -
if kernel is capable of multiple ppls and there is enough space reserved -
it will switch the policy during first metadata update.

Signed-off-by: Pawel Baldysiak <pawel.baldysiak@intel.com>
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>