msm: kgsl: Enable the iommu halt feature for certain IOMMU versions

Enable the IOMMU halt feature for non v0 IOMMU versions instead of
depending on the feature being enabled in the IOMMU device tree.
This is because on certain chipsets this feature is not set in
the device tree even if the IOMMU h/w supports it.

Change-Id: I39236b5f7a7dc1d0d739bbb39bfc7fda4931da56
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>