ARM: dts: msm8939: Decrease pm_qos_latency

Decreasing pm_qos_latency from 701 to 401. Latency
to bring CPU back into normal state is less compared
to 8916 target. This will help to improve power and
performance number.

Change-Id: I519e4310063e03648652b8f71502ca600ef3a7e9
CRs-Fixed: 709708
Signed-off-by: Prakash Kamliya <pkamliya@codeaurora.org>