arm/dt: 8974v2: Enable halting of iommu

The IOMMU should be halted before writing to registers in the IOMMU
device to ensure the integrity of the register updates.

Change-Id: I60d6c4fe180e47d43b1912e0c9c0ffdc289f496b
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
1 file changed