Change in coreboot[master]: soc/intel/../thermal: Use `clrsetbits32` API for setting LTT

[Felix Singer (Code Review)]

Attention is currently required from: Maulik V Vaghela, Subrata Banik, Angel Pons, Patrick Rudolph.
 Felix Singer has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59310 )

Change subject: soc/intel/../thermal: Use `clrsetbits32` API for setting LTT
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Patch Set 7:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/59310/comment/f969711f_4da82f99 
PS7, Line 7: soc/intel/../thermal: Use `clrsetbits32` API for setting LTT
I suggest:
  soc/intel/common/thermal: Use `clrsetbits32()` for setting LTT

Or this:
  soc/intel/common/thermal: Clean up code using `clrsetbits32()`