[SYCL] add dev2dev memcpy by SYCL API (#24476)

* add dev2dev memcpy by SYCL API

* mv GGML_SYCL_DEV2DEV_MEMCPY to runntime table

* update the detect method for p2p comm

* fix the erro created during fix confilct

---------

Co-authored-by: Neo Zhang <NA>

ggml/src/ggml-sycl/common.hpp

@@ -62,6 +62,7 @@ extern int g_ggml_sycl_debug;
 extern int g_ggml_sycl_disable_optimize;
 extern int g_ggml_sycl_prioritize_dmmv;
 extern int g_ggml_sycl_enable_flash_attention;
+extern int g_ggml_sycl_dev2dev_memcpy;
 
 
 #if defined(__clang__) && __has_builtin(__builtin_expect)
@@ -126,6 +127,11 @@ enum ggml_sycl_backend_gpu_mode {
   SYCL_MUL_GPU_MODE
 };
 
+enum ggml_sycl_dev2dev_memcpy_mode {
+  DEV2DEV_MEMCPY_SYCL = 0,
+  DEV2DEV_MEMCPY_L0 = 1,
+};
+
 static_assert(sizeof(sycl::half) == sizeof(ggml_fp16_t), "wrong fp16 size");
 
 static void crash() {