drivers: thermal: bcl: Add BCL peripheral driver

Add snapshot of BCL driver from kernel 4.14 as of 'commit
<2a82a82> ("Merge "msm: ais: fix soc resource start
sequence")'.

Change-Id: I903fdec14b1657e3da762e254de6a391ef8e630a
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>
Signed-off-by: Asha Magadi Venkateshamurthy <amagad@codeaurora.org>