include: FI_CHECK_OP check 'op' instead of 'ops'

FI_CHECK_OP should check if the 'op' is present, not ops->ops.

Signed-off-by: Sayantan Sur <sayantan.sur@intel.com>
Merge pull request #63 from sayantansur/fi-check-op

include: FI_CHECK_OP check 'op' instead of 'ops'