ARM: dts: msm: Enable IPA DMA for MHI on mdmcalifornium

Use IPA DMA for software channels. Clients include
QTI for sending control data packets between host
and device for setting up a data call.

Change-Id: Icb8b33355395fc91dd50df6344f2e8094d3153c7
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>