Block integrity registration update

[Martin K. Petersen]

As requested, here's the integrity registration update for 4.4. Only
delta is patch 5 which retains the non-PI metadata check as requested by
Keith as well as the DM rework by Mike. I rebased on top of
block/for-4.4/drivers to accommodate the NVMe shuffle.

[PATCH 1/5] block: Move integrity kobject to struct gendisk
[PATCH 2/5] block: Consolidate static integrity profile properties
[PATCH 3/5] block: Reduce the size of struct blk_integrity
[PATCH 4/5] block: Export integrity data interval size in sysfs
[PATCH 5/5] block: Inline blk_integrity in struct gendisk

-- 
Martin K. Petersen	Oracle Linux Engineering