ARM: dts: msm: Add sps support for sdm670

SPS (Smart Peripheral System) enables the support of all BAMs
in the system which provide DMA functionality to various
peripherals. Add sps support for sdm670.

Change-Id: I602622ffd3f964cd37408db6ffbe4e681d72ca4b
Signed-off-by: Lakshmi Sunkara <lakshmis@codeaurora.org>