Disable lcd undervolt on anzu

anzu display does not like undervolting,
it's causing abnormal lcd contrast & saturation

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: Icee29b19e6b8d41daaa4b79d821d73092d9af8c9
Merge pull request #16 from mikeNG/anzu-display

Disable lcd undervolt on anzu