Revert "ARM: dts: msm: set rpm-smd standalone flag".

This reverts commit c412c9312360f8acf0a3d0d6706fd39c2514cce0.

Remove standalone flag to provide communication between
application processor subsystem and RPM.

Change-Id: Ib25b1ba78b5fae69068ee77ab47b802c964dc28b
Signed-off-by: Venkat Devarasetty <vdevaras@codeaurora.org>