Merge branch 'drivers/qcom-smem'
soc: qcom: Add device tree binding for SMD

Add device tree binding documentation for the Qualcomm Shared Memory
Device.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
soc: qcom: Add Shared Memory Driver

This adds the Qualcomm Shared Memory Driver (SMD) providing
communication channels to remote processors, ontop of SMEM.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>