msm: rpm-smd: move rpm-smd driver to a new location

This patch set moves rpm-smd.c and rpm-smd-debug.c
drivers from mach-msm directory to a machine
independent directory.

Change-Id: I0f456ab9063296bf7dbcea34e9c3c93c032f8d7c
Signed-off-by: Murali Nalajala <mnalajal@codeaurora.org>