bluetooth: Add logic to avoid XO leakage

SW implementation for XO selection option for HSP
in Lahaina/LahainaPro.
Once BT_EN is asserted, pull GPIO201 high and pull it
down to low after 2ms delay to avoid leakage.

Change-Id: Ib9f6ce27a27c26a84975bcbbae1da22dedd4e1ec
Signed-off-by: Mahesh Kumar Sharma <smahesh@codeaurora.org>