added file system test

bsp_q7s/boardtest/FileSystemTest.cpp

@@ -0,0 +1,14 @@
+#include "FileSystemTest.h"
+
+#include <iostream>
+#include <cstdlib>
+
+FileSystemTest::FileSystemTest() {
+    using namespace std;
+    SdCard sdCard = SdCard::SDC0;
+    cout << "SD Card Test for SD card " << static_cast<int>(sdCard) << std::endl;
+    //std::system("echo Hello World");
+}
+
+FileSystemTest::~FileSystemTest() {
+}