[driver]: partial mocking of driver component

* added mocking of spi master and gpio
* mock registering in one function in
  component.cmake

mocks/freertos/include/freertos/FreeRTOS.h

@@ -0,0 +1,14 @@
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * NOTE: this is not the original header file from the freertos component.
+ * It is a stripped-down copy to support mocking.
+ */
+
+#pragma once
+
+typedef uint32_t TickType_t;