ARM: dts: msm: Add initial device tree for mdmferrum

Add the dtsi files for mdmferrum SoC along with dts
files for the simulator and rumi platforms.

Change-Id: I25d0c5bfaa5f8ee188443798584f059073d91d62
Signed-off-by: Venkatesh Yadav Abbarapu <quicvenkat@codeaurora.org>