sync : ggml (#13268)
* vulkan : kernels for depthwise 2D convolution (CONV_2D_DW) (ggml/1204)
* vulkan : add kernels for depthwise 2d convolution (OP_CONV_2D_DW)
* review: remove src_x/y < 0 checks; add performance tests
* sync : ggml
ggml-ci
* vulkan : fix lint (#0)
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Co-authored-by: Acly <aclysia@gmail.com>
