ARM: dts: msm: Add couple of new variant device tree support on qcs405

Add device tree support to boot with bare minimum functionality, while
at it also modify model description of another variant of qcs405.

Change-Id: I728fab5288df2fc48434c6777032f8dc62fa3269
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>