UPSTREAM: arm64/fpsimd: Remove spurious check for SVE support

There is no need to check for SVE support when changing vector lengths,
even if the system is SME only we still need SVE storage for the streaming
SVE state.

Bug: 254441685
Fixes: d4d5be94 ("arm64/fpsimd: Ensure SME storage is allocated after SVE VL changes")
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240115-arm64-sve-enabled-check-v1-1-a26360b00f6d@kernel.org


Signed-off-by: Will Deacon <will@kernel.org>
(cherry picked from commit 8410186c)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: I90e4945237fbd6d429ec442e9e27071d2aff5fac