regulator: qpnp-labibb: Always configure current sense

The AMOLED panel needs a different current sense configuration
than LCD. Move the current_sense as a part of default LAB
initialization.

Change-Id: I9f6d23622e468d30c3db740bcd5077b7f6a7644a
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>