iommu: qcom-smmu: allow SID 0

It turns out this is a very real stream ID. Who woulda thought?

Drop the 0 check on the SID, there's no reason for it to be there in the first
place.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
1 file changed