ARM: dts: msm: Add batt_therm coefficients for QRD SDM660/630

Configure battery thermal coefficients for QRD660/630 to make sure the
device could read the correct battery temperatures.

CRs-Fixed: 2038922
Change-Id: I21d0eedfec0a0529d8864d11b703659f4ba43b6a
Signed-off-by: Yingwei Zhao <cyizhao@codeaurora.org>