ARM: dts: msm: Prevent C4 LPM mode for 8996

Usecases where it frequently write/read data from
storage suffer from the performance when they enter
into C4 state. Prevent entering into C4 state when
the data operation is happening. Apply PMQoS latency
lesser than C4 state.

Change-Id: I402cbdcdebf69be58f930a679633921e168a70c3
Signed-off-by: Murali Nalajala <mnalajal@codeaurora.org>