Virtual block drivers are broken for4.14 due to block
level framework primitives change. Port the virtual
block drivers to build and compile for 4.14.
Change-Id: I50808765b4b1bf817db06d523d17fb2a87e80ddc
Signed-off-by: Murali Nalajala <mnalajal@codeaurora.org>
Signed-off-by: Prakruthi Deepak Heragu <pheragu@codeaurora.org>