Regularise polarity of safety catch across Compute Modules
The comment above ReadSafetyCatch about the CM4Lite catch pulling low was factually incorrect: it's always been a pull-up. It's just that we keep changing our minds about whether the catch is fitted for the Lite boards vs the ones with eMMC populated. I believe we eventually settled on CM4 and earlier boards being treated the same, therefore there is no longer any need to conditionally EOR the result based on the generation of board.