msm: snd: Add updated RPC version number for unicorn

SND RPC has been updated to major version to support new
SND device nodes for FM playback on unicorn. Hence add
support for new SND RPC version

Change-Id: Ibfdbeb033a2be20c76a662a0b847c7e041521a75
Signed-off-by: Sriranjan Srikantam <cssrika@codeaurora.org>