drivers: thermal: CX IPeak: Add snapshot of CX IPeak cooling device

Add a snapshot of CX IPeak cooling device driver from msm-4.19 as of
'commit <f603750db5e89> ("drivers: thermal: validate cdev sysfs
cur_state request before using it")'.

Change-Id: Ia4df243f308bcd2d077978408323e67fa35469b2
Signed-off-by: Manaf Meethalavalappu Pallikunhi <manafm@codeaurora.org>