ARM: dts: msm: add remote debugger support for sm6150

Add remote debugger device configuration. The Remote Debugger driver
allows a debugger running on a host PC to communicate with a remote
stub running on peripheral subsystems.

Change-Id: I25f402cf2135b2312eae343baea27ed0f48e567d
Acked-by: Devender Kaushik <dkaushik@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>