arm64: Add an override for ID_AA64SMFR0_EL1.FA64

Add a specific override for ID_AA64SMFR0_EL1.FA64, which
disables the full A64 streaming SVE mode.

Note that no alias is provided for this, as this is already
covered by arm64.nosme, and is only added as a debugging
facility.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2 files changed