drm/msm/dp: Snapshot of DP and supporting files

This snapshot includes DP and supporting files for compilation.
This change also has the copyright year update to the files. Snapshot
was taken from msm-4.14 as of commit 1df57774a520
("ARM: dts: msm: Remove dma-coherent for IPA for sdxprairie").

Change-Id: I7152ec12a1c3c8346e158540c8bf70d4bbc2c372
Signed-off-by: Satya Rama Aditya Pinapala <psraditya30@codeaurora.org>