arm64: cpufeature: Track unsigned fields
Some of the feature bits have unsigned values and need to be treated accordingly to avoid errors. Adds the property to the feature bits and use the appropriate field extract helpers. Reported-by: NAKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: NSuzuki K. Poulose <suzuki.poulose@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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