ARM: dts: msm: add remote debugger support

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: Ic524e96343e14be0341768d00462c88bcb0af35a
Acked-by: Devender Kaushik <dkaushik@qti.qualcomm.com>
Signed-off-by: Mohammed Nayeem Ur Rahman <mohara@codeaurora.org>