qcom-sps-dma: Add snapshot of QCOM SPS DMA driver

This change adds a snapshot of QCOM SPS DMA driver
from the msm-4.14 'commit 78bed541dbf8950be ("Merge "msm:
camera: hyp: To fix Stack overflow"")'.

Change-Id: I9270fcaf52766ce20585333c13eed9f31b7daa8e
Signed-off-by: Shrey Vijay <shreyv@codeaurora.org>
Signed-off-by: Chetan C R <cchinnad@codeaurora.org>