mmc: block: add card device reference counting for CQ mode

Since error handling could race with runtime suspend, increase usage_count
for the card device will prevent this race.

Change-Id: Ie95a3c631f519c7993b0032f0b674871b64e4cb6
Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>
[xiaonian@codeaurora.org: fixed trivial merge conflicts]
Signed-off-by: Xiaonian Wang <xiaonian@codeaurora.org>
1 file changed