Rename usbhost_storageinit() to usbhost_msc_initialize(). Add calls to usbhost_cdcacm_initialize() is CONFIG_USBHOST_CDCACM is selected.

Documentation/NuttxPortingGuide.html

@@ -5523,7 +5523,7 @@ int kbd_decode(FAR struct lib_instream_s *stream, FAR struct kbd_getstate_s *sta
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             <b>Examples</b>:
-            The function <code>usbhost_storageinit()</code> in the file <code>drivers/usbhost/usbhost_storage.c</code>
+            The function <code>usbhost_msc_initialize()</code> in the file <code>drivers/usbhost/usbhost_storage.c</code>
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