ARM: dts: msm: Add support for w-cdp, w-mtp boards for msm8226

New mtp, cdp subtypes added only msm8226 and apq8026 chip
revisions.

Change-Id: I5f9d77dfd5dfb71c70429172dd6237ad7c437cce
Signed-off-by: Hanumant Singh <hanumant@codeaurora.org>