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FEAT_LRCPC3 adds more instructions to support the Release Consistency model. Add a HWCAP so that userspace can make decisions about instructions it can use. Signed-off-by: Joey Gouly <joey.gouly@arm.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20230919162757.2707023-2-joey.gouly@arm.com [catalin.marinas@arm.com: change the HWCAP number] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>