ARM: dts: msm: Add RPM stats support for msm8953

Add RPM master stats and RPM stats support for msm8953.
RPM maintains a counter of the masters i.e APPS, MPPS etc
number of times the SoC entered a deeper sleep mode involving
lowering or powering down the backbone rails - Cx and Mx and
the oscillator clock, XO.

Change-Id: Ied0d21a43a60e48cc0f04a89f410efefcbfe8018
Signed-off-by: Raghavendra Kakarla <rkakarla@codeaurora.org>