ARM: dts: msm: Add GPI DMA device tree nodes for sdm845

Add GPI device tree nodes for GPI DMA driver. The driver
provides DMA capabilities for peripheral buses such as
I2C, UART, and SPI.

CRs-Fixed: 2042764
Change-Id: I495a5f231ec65d31a172b03d781413ff6daf2370
Signed-off-by: Sujeev Dias <sdias@codeaurora.org>