[SYCL] support OP cross_entropy_loss, cross_entropy_loss_back (#25236)

* support OP cross_entropy_loss, cross_entropy_loss_back

* correct format issue

ggml/src/ggml-sycl/cross_entropy_loss.hpp

@@ -0,0 +1,7 @@
+#pragma once
+
+#include "common.hpp"
+
+void ggml_sycl_cross_entropy_loss(ggml_backend_sycl_context & ctx, ggml_tensor * dst);
+
+void ggml_sycl_cross_entropy_loss_back(ggml_backend_sycl_context & ctx, ggml_tensor * dst);