soc: qcom: Add ipc router plugin for sdio transport

This snapshot is taken as of msm-4.4 commit dc86ce0f ("soc: qcom:
ipc_rtr_xprt: Add support to set version in transport").

Change-Id: I729d3c910372d2c3c0bbaaae74a42150c9929732
Signed-off-by: Amandeep Singh <amansing@codeaurora.org>