ARM: dts: msm: Set batt_id settling delay to 80MS for SDM429w

With default hardware settling time, batt_id may be read incorrectly
from RRADC on PM660 on SDM429w due to the presence of a parallel capacitor,
which increases the settling time required.
Set batt_id settling delay to maximum value of 80MS for SDM429w.

Change-Id: I084ca45e4e532ac8ebadd3bad215000b786e5908
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>