ARM: dts: msm: enable LCD LAB/IBB regulator for Dragonboard

LAB/IBB regulator support both LCD and Amoled mode
for display panel. Enable LCD mode LAB/IBB for
Dragonboard APQ8094.

Change-Id: I99029d33cfb1c3477fb6e314b70d4b8e0d7cb6ed
Signed-off-by: Ilia Lin <ilialin@codeaurora.org>