ARM: dts: msm: Add new dt node for low power mode driver workarounds

Add new lpm-workarounds node for lpm-workarounds module to specify any
workarounds required for low power modes driver. Add property to enable
workaround for unvoting the CX turbo vote during exit of rpm assisted
power collapse.

Change-Id: I1840e0735ad2662d9496093a90f07da3a8104e3f
Signed-off-by: Srinivas Rao L <lsrao@codeaurora.org>