* ggml-cpu: fix SVE leftover path in ggml_vec_dot_f32 2D convolutions with kernel size 9 produced different results on SVE enabled ARM devices. After debugging it turned out that ggml_vec_dot_f32 was using data from inactive lanes. Use svmla_f32_m(pg, sum1, ax1, ay1) so inactive lanes retain sum1. * cont : clean-up --------- Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>