Add an SD card reader test.

client/site_tests/hardware_RealtekCardReader/control

Index: client/site_tests/hardware_RealtekCardReader/control
diff --git a/client/site_tests/hardware_RealtekCardReader/control b/client/site_tests/hardware_RealtekCardReader/control
new file mode 100644
index 0000000000000000000000000000000000000000..f194e9bee6e4b7278828b8a46421b4228afebda8
--- /dev/null
+++ b/client/site_tests/hardware_RealtekCardReader/control
@@ -0,0 +1,21 @@
+# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+NAME = 'hardware_RealtekCardReader'
+AUTHOR = 'The Chromium OS Authors'
+PURPOSE = 'Verify the Realtek card reader basically works.'
+CRITERIA = 'Fails if the Realtek card reader is not detected.'
+TIME='SHORT'
+TEST_CATEGORY = 'Functional'
+TEST_CLASS = "hardware"
+TEST_TYPE = 'client'
+
+DOC = """
+This test checks for the Realtek USB device and for any removable
+block devices.
+This test requires an SD card to be plugged in the SD slot.
+This test applies to x86 systems only.
+"""
+
+job.run_test('hardware_RealtekCardReader')