Update ggml_sycl_op_mul_mat_vec_q (#5502)
* Update ggml_sycl_op_mul_mat_vec_q
* Apply suggestions from code review
Co-authored-by: Abhilash Majumder <30946547+abhilash1910@users.noreply.github.com>
* revert suggestion on macro
* fix bug
* Add quant type GGML_TYPE_IQ1_S to unsupported
* fix format
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Co-authored-by: Abhilash Majumder <30946547+abhilash1910@users.noreply.github.com>
