ARM: dts: msm: Add SPS node for sdmmagpie

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: Id3aca3b45865d7bed7f8c948054c64e5ab78e69d
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>