arm64: lib: Consistently enable crc32 extension
Currently most of the assembly files that use architecture extensions enable them using the .arch directive but crc32.S uses .cpu instead. Move that over to .arch for consistency. Signed-off-by: NMark Brown <broonie@kernel.org> Acked-by: NArd Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20200414182843.31664-1-broonie@kernel.orgSigned-off-by: NWill Deacon <will@kernel.org>
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