soc: qcom: Add socinfo driver snapshot

This is a snapshot of the socinfo driver from drivers/soc/qcom
taken as of msm-4.4 commit <2e45ea728118fa8> (Merge "ARM:
dts: msm: add MSM External display node for msmcobalt").

CRs-Fixed: 1055807
Change-Id: I3a1225f21eedf51eb0509149347e31c628da364b
Signed-off-by: Bruce Levy <blevy@codeaurora.org>
Signed-off-by: Bhargav Gurappadi <bhargavg1@codeaurora.org>