Add support for block disk encryption

BugLink: https://bugs.launchpad.net/bugs/1945470



With new file encryption framework the crypto vops should support
crypto configuration for block disk encryption feature as well.

Change-Id: I1504a023f91376b207d9af19ad097405a3a42c85
Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>
Signed-off-by: Pruthvi Kurada <pkurada@codeaurora.org>
(cherry picked from commit fc7afbeee19dda257508987376b04de3d4788e13)
Signed-off-by: Shrirang Bagul <shrirang.bagul@canonical.com>