ARM: dts: msm: add dynamic-boost-control device node for apq8084-v1.1

Devices with apq8084 v1.1 chip and new power grid needs to enable dynamic
boost regulator mode control for power saving. Hence enable it.

Change-Id: Ic21e9bb21399b29e15fdecee395618dca954d584
Signed-off-by: Ke Liu <keliu@codeaurora.org>