ARM: dts: msm: Add device tree for MPQ8092 CDP

Add a DTSI file and a top-level DTS file needed to support
the MPQ8092 CDP platform in a dedicated DTS file.

Change-Id: I767c438809e76cb5b00c016d82418d988f4ef075
Signed-off-by: Srinivas Ramana <sramana@codeaurora.org>