mmc: add support for bkops

Add support for manual and auto bkops for
legacy (not command-queue) mode.

Change-Id: I1333e1d4330393e446ba48a9474c83295744c050
Signed-off-by: Dov Levenglick <dovl@codeaurora.org>
[subhashj@codeaurora.org: fixed merge conflicts and compilation
errors]
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
[xiaonian@codeaurora.org: fixed trivial merge conflicts]
Signed-off-by: Xiaonian Wang <xiaonian@codeaurora.org>
9 files changed