arm/dt: msm8226: enable halting of iommu
arm/dt: msm8226: 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: I9a9e0608d61d79a92f1a016dbb426f938a3c1e7e
Signed-off-by: Mitchel Humpherys <5070267e141ca308fc855217ddbeaf20e729a7bf@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas