arm/dt: KRYPTON: Add initial device tree for MSMKRYPTON

Add the DTSI file for the MSMKRYPTON SoC as well as a DTS file
for the MSMKRYPTON SIM platform. Also update makefile for
compiling dts file.

Change-Id: I9b25dcebe5e41ca02f4947d81a11f704408e12dd
Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>