drivers: thermal: Snapshot of bcl driver from msm-4.14

Add a snapshot of bcl driver changes from msm-4.14.
This is snapshot as of 'commit <aee9cc3c530e> ("drivers: bcl_pmic5: Fix
Ibat related warnings if not enabled")'.

Change-Id: Ie9ff5809312f584cb8c8234c418c6dcea7fb5210
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>