build: use variable for crypto dep path

PR-URL: https://github.com/nodejs/node/pull/55928
Reviewed-By: Cheng Zhao <zcbenz@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

node.gni

@@ -10,6 +10,8 @@ declare_args() {
   # The location of V8, use the one from node's deps by default.
   node_v8_path = "$node_path/deps/v8"
 
+  node_openssl_path = "$node_path/deps/openssl"
+
   # The NODE_MODULE_VERSION defined in node_version.h.
   node_module_version = exec_script("$node_path/tools/getmoduleversion.py", [], "value")