ARM: dts: msm: update entries for IOMMU mapping

IOMMU mapping APIs have been deprecated in favor of device
tree entries. Update those properties as required for MHI.

CRs-Fixed: 2398500
Change-Id: I3b7e3c68bbdf19d2597f045b8f0b813cc4255e89
Acked-by: Bhaumik Vasav Bhatt <bbhatt@qti.qualcomm.com>