include: uapi: Update the MIN_OCV_UV threshold for QG

To support lower-voltage battery profiles, reduce the
min-OCV threshold to 2V.

Change-Id: I7a41f8afc49f451c2d22c665fb927269e6f5bd9a
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>