bus: qcom-smem: Extract smem from smd

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
bus: qcom-smem: Extract smsm from SMD
bus: qcom-smem: Implement qcom_smem_alloc
mfd: qcom-smd: Accessor function for wcn log
fixup! bus: qcom-smem: Extract smsm from SMD
bus: qcom-smp2p: Qualcomm SMP2P embryo