ARM: dts: msm: Force float charger as DCP for trinket

Add dt property to force float charger to be treated as
DCP charger for trinket target.

Change-Id: If293f8344c6c1ecb3a1495ed83daae8c5479fa62
Signed-off-by: Umang Agrawal <uagrawal@codeaurora.org>