ARM: dts: msm: Add RPM regulator devices for PM/PMI PLUTONIUM

Add a device tree include file which defines all PMIC
PMPLUTONIUM and PMIPLUTONIUM regulator devices.

Replace stub regulators with rpm-smd-regulator device
nodes which are RPM controlled.

There is one exception of the pmiplutonium_boost which
is not currently supported by RPM and thus remains a
stub regulator node.

Note that S8 and S9 are VDD_APC0/1 SPM regulators
and will not be rpm-smd-regulator devices.

Change-Id: Ibfe141e5807428528600f600dbfb2ba12a3976e3
Signed-off-by: David Keitel <dkeitel@codeaurora.org>