ARM: dts: msm: Update BCL thermal zone mitigation for SDM450 with PMI632

Update BCL thermal zone mitigation for SDM450 with PMI632 platform
based on latest recommendation. It updates vbat_lvl0 and soc zones
with cpu frequency mitigation and enables ibat_lvl0 cpu frequency
mitigation and core isolation.

Update BCL ibat thermal zone thresholds as well based on latest
recommendation.

Change-Id: I0d9d5d010f21818e0fd299c94017609b8b8c411a
Signed-off-by: Manaf Meethalavalappu Pallikunhi <manafm@codeaurora.org>