ARM: dts: msm: Add dts file for kdump kernel on sa8155

Common dtsi for all versions of SoC. No support for DTB overlay.

Kdump crash kernel is not loaded by bootloader. Hence, device
tree overlay support is not present.

Change-Id: Ibe6bf0706a3eb7bd214e456d00159f0768911a77
Signed-off-by: Akshay Adiga <aadiga@codeaurora.org>