iwlwifi: mvm: make threshold temperatures unsigned
iwlwifi: mvm: make threshold temperatures unsigned

There's no need to have negative threshold temperatures, so make
them unsigned to avoid signedness warnings in debugfs.

Signed-off-by: Johannes Berg <bff32994ff0f8d048f262a8388145a71b6071bfe@intel.com>
Signed-off-by: Luca Coelho <48024ebf6407f04843f8b4062a045f41623c6d61@intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs