ARM: dts: msm: Update low power mode parameters for msm8917

Update low power mode parameters like latency, time overhead,
steady state power and energy overhead with the new measured
values.

Change-Id: Ic8db3857142e8702ffe3e447e37ab27a68e1f165
Signed-off-by: Srinivas Rao L <lsrao@codeaurora.org>