ARM: dts: msm: Add SMMU entry and disable io-coherency on sdmmagpie

This change adds SMMU entry for USB and disables io-coherency
when allocating buffers for GSI in USB driver for sdmmagpie.

Change-Id: Icd792124db70141358cf0dec7b20a37830527ecc
Signed-off-by: Pratham Pratap <prathampratap@codeaurora.org>