ARM: dts: msm: increase rsc ring length for chipset sm8150-sdxprairie

Increase local ring length of rsc from default size since RSC
channels by design require larger ring length.

CRs-Fixed: 2361266
Change-Id: I7e278eeccc1a73f77c968a53bd6e9993af4139f5
Signed-off-by: Sujeev Dias <sdias@codeaurora.org>