ARM: dts: msm: Add SPS node for atoll

Add SPS module to device tree. SPS (Smart Peripheral System)
enables the support of all BAMs in the system which provide DMA
functionality to various peripherals.

Change-Id: I3054229ca9c48074cac488d69036243b72fc62a4
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>