ARM: dts: msm: update low power mode parameters for msm8939-v3.0

msm8939-v3.0 supports L2 GDHS modes. Update low power mode parameters
with the values measured at new min frequencies for the both the clusters.

Change-Id: I251035c9c9b56a0302c02a95732c39187556f35f
Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
Signed-off-by: Sridhar Gujje <sgujje@codeaurora.org>
Signed-off-by: Bharat Pawar <bpawar@codeaurora.org>
Signed-off-by: Nirmal Abraham <nabrah@codeaurora.org>