target/arm/tcg: Use "or SME" feature checks where needed

Many SVE instructions should be provided where the CPU implements
either SVE or SME. Currently we largely check only for features
aa64_sve or aa64_sve2. This happens to work because we forbid
creation of a CPU with SME but not SVE. To allow users to create
SME-only CPUs we need to update the conditions to use the "or SME"
versions of the feature tests instead.

This commit was created by going through translate-sve.c from
top to bottom looking for aa64_sve feature tests and cross
checking those against the instruction descriptions in the Arm ARM,
which will say "(FEAT_SVE || FEAT_SME)" for instructions that
are provided for both features, and "(FEAT_SME)" for the rarer
instructions that are SME only.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20260202133353.2231685-11-peter.maydell@linaro.org