misc: mic: Fix SCIF build failure with IOMMU_SUPPORT disabled

SCIF depends on IOVA which requires IOMMU_SUPPORT to be enabled.
The long term fix is to move IOVA from drivers/iommu to lib/
but this current patch should fix the reported issue.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>