ARM: dts: msm: set fg-chg-iterm-ma to 100 mA for PMI8994

Set the fuel gauge adc termination current to 100mA to match the system
termination current.

CRs-Fixed: 804096
Change-Id: Ibbe8244a0ea38facb3dc816a40dbf15d9fdd6ec1
Signed-off-by: Xiaozhe Shi <xiaozhes@codeaurora.org>