fix musl x86_64 and x64 config adapted

Signed-off-by: Nhonglie <yihonglie1@huawei.com>

musl_config.gni

@@ -8,7 +8,7 @@ declare_args() {
     musl_arch = "arm"
   } else if (current_cpu == "arm64") {
     musl_arch = "aarch64"
-  } else if (current_cpu == "x86_64") {
+  } else if (current_cpu == "x86_64" || current_cpu == "x64") {
     musl_arch = "x86_64"
   }
   # musl_root = "$root_out_dir/obj/third_party/musl"