target/arm: Implement FEAT_FAMINMAX for SME

Since there is no bfloat16 variant of FAMINMAX,
check for missing function pointer in do_z2z_nn_fpst.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20260522220306.235200-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
3 files changed