Merge patch series "power: regulator: Fix some Smatch reported issues"

Andrew Goodbody <andrew.goodbody@linaro.org> says:

Smatch reported some issues in the regulator drivers, mostly repeated
instances of testing an unsigned variable for being negative but also an
expression needing parenthesis to be interpreted as expected.

[trini: Drop 5/6 for now due to changes being requested on review]

Link: https://lore.kernel.org/r/20250807-pwr_regulator-v1-0-42a4105336ec@linaro.org