ARM: dts: msm: enable PM8916 linear charger peripheral for msm8939

Enable linear charger peripheral but keep charging functionality
disabled for msm8939 MTP and CDP boards.

Change-Id: Idc018c3598c41166ffcd9ef04be5a329f2b92327
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>