ARM: dts: msm: Add CDP support for msmsamarium

Add initial skeleton files for samarium CDP board.
Update uart phandle naming conventions to match those
used in other targets.

Change-Id: I92a4058113b3aecec7b786f248df3c50a260da24
Signed-off-by: Osvaldo Banuelos <osvaldob@codeaurora.org>