thermal: tsens: Update mdm9640 TSENS condition

Client id and HW number will not be same for Tsens if there is any
discontinuity in the sensors. Update the condition such that correct
client id is returned in case of discontinuity.

CRs-Fixed: 1008416
Change-Id: Id86a53eeaacd91173a924f947176f8b4375c136e
Signed-off-by: Rama Krishna Phani A <rphani@codeaurora.org>