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

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

Change-Id: I087ee3f8656fff1c62c0a6d902cfd73273abe98f
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>