usb: gadget: MIDI: Add support for SuperSpeed enumeration

Currently MIDI function supports only upto HighSpeed
enumeration. Add descriptors for SuperSpeed mode
and bind them to enable SuperSpeed enumeration of
USB MIDI function.

Change-Id: I0451dabf91e88503ab588dadbfbe6a2b76e2351b
Signed-off-by: Ajay Agarwal <ajaya@codeaurora.org>
1 file changed