A device may change capabilities after each reset, e.g. due to a firmware
upgrade.  We should thus check for Security Send/Receive and OPAL support
after each reset.

Based on patches from Christoph and Keith.
Signed-off-by: NScott Bauer <scott.bauer@intel.com>
Signed-off-by: NJens Axboe <axboe@fb.com>