ARM: dts: msm: Disable VMBMS for 8939 CDP

The BMS hardware module initiates 100ms ADC reads for SOC
measurement. This is not required for the CDP platform
as it does not support a battery.

Change-Id: I55432643e49724d695543712fbab3211849dcc34
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>