[PATCH 6.12.y] arm64: Filter out SME hwcaps when FEAT_SME isn't implemented

[Mark Brown]

On Tue, Jul 15, 2025 at 01:49:23PM +0100, Mark Brown wrote:

> Fixes: 5e64b862c482 ("arm64/sme: Basic enumeration support")
> Reported-by: Yury Khrustalev <yury.khrustalev at arm.com>
> Signed-off-by: Mark Brown <broonie at kernel.org>
> Cc: stable at vger.kernel.org
> Link: https://lore.kernel.org/r/20250620-arm64-sme-filter-hwcaps-v1-1-02b9d3c2d8ef@kernel.org
> Signed-off-by: Will Deacon <will at kernel.org>
> ---

This needs an additional signoff from me, sorry - I didn't register due
there being a signoff from me further up the chain.
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