diag: Add snapshot of Diag

This snapshot is taken as of msm-4.4 commit <e2787f510d> Merge
"ARM: dts: msm: change UFS/SDHC2 power supply for msmcobalt
interposer QRD"

Remove references to SMD and fix code style warnings and errors.

CRs-Fixed: 1092890
Change-Id: Id5903c391446c8f908a4efc0651df08e3c302d1a
Signed-off-by: Sreelakshmi Gownipalli <sgownipa@codeaurora.org>
Signed-off-by: Chris Lew <clew@codeaurora.org>