[FMV] Fix incorrect system register dependencies.

Some features are later versions of others, like sve2 and sve, therefore performing equality checks on system register values would incur incorrect feature detection on later hardware. See https://github.com/ARM-software/acle/issues/320 for example. Therefore we should instead do >= comparisons when HWCAP info is not available.

I am also fixing incorrect detection for LSE and WFxT. Lastly to detect SVE2 and SME2 I am using the SVEVer and SMEVer bitfields respectively.

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ARM-software / acle

[FMV] Fix incorrect system register dependencies. #322