defconfig: sdm845: Enable GPI dmaengine driver

Enable support for the QCOM GPI DMA controller. This controller
provides DMA capabilities for variety of peripheral buses such
as I2C, UART, and SPI.

CRs-Fixed: 2042764
Change-Id: I64ce4838f72cdb64f062da31c58f1301b91fc401
Signed-off-by: Sujeev Dias <sdias@codeaurora.org>