ARM: dts: msm: Update charger configuration for BTC

Charger does not support 85% as cold BTC threshold.
Set 70% as cold and 35% as hot threshold for initial
BTC configuration.

CRs-Fixed: 653801
Change-Id: I88d02e9b62ca566d9ddd8aaa281756bd7ef3b055
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>