ARM: dts: msm: Add common device tree for SA8195 ADP

SA8195 ADP board has three variants. Reorganize common
entries present in multiple adp board files to a
common file and include it.

Change-Id: I842784442791be05562ece297e61a4592139d7b6
Signed-off-by: Yadu MG <ymg@codeaurora.org>