mmc: card: Fix card bkops configuration in cmdq

Error mask for the card exception event is getting disabled in the
cmdq. On some cards, both manual bkops and auto-backups are enabled.
Since manual bkops is enabled, the card would trigger the exception
for urgent bkops which is resulting in response errors in cmdq mode.

When auto-bkops is enabled, this exception error mask can be masked.
Correcting the conditional check which is unmasking this error event.

Change-Id: I80efded505b104dd3246d18db875c5e0e7f1887e
Signed-off-by: Ram Prakash Gupta <rampraka@codeaurora.org>