ARM: dts: msm: add non-secure display iommu streams to sdm845

There are four non-secure iommu streams for display on sdm845.
Update iommus list to include all four; otherwise, mnoc bus
error would occurs.

CRs-Fixed: 2009714
Change-Id: I786907a90539e1cce0f7232dce87602c0c68c229
Signed-off-by: Alan Kwong <akwong@codeaurora.org>