thermal: tsens: Correct sensor calibration for QCS405

For two-point calibration, fuse registers holding calibration
values for multiple TSENS sensors need to be read. Correct register
bits selected for sensors 2 and 7 to ensure correct temperature
readings after calibration.

Change-Id: Ib375192f2fdda9383e447a1c5ad18adbf5fb82d6
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>