xe: jit: gemm: restrict adding new int4 strategies if not aligned

Author: dyoussif

src/gpu/intel/jit/gemm/gen_gemm_kernel.cpp

@@ -538,6 +538,8 @@ status_t gen_gemm_nocopy_kernel_desc_t::select_kernel(compute::gpu_arch_t arch,
     auto add_mode_matches = [&](bool has_mode, const char *(*match)(Type)) {
         if (!has_mode) return;
         auto &def = base.selector.precisions;
+        if ((problem_.Ta.isInt4() || problem_.Tb.isInt4()) && k % 2 != 0)
+            return;
         if (match(problem_.Ta)) {
             match_params.push_back(base);
             match_params.back().selector.precisions[0] = match(problem_.Ta);