usb: gadget: Add USB super speed companion descriptor

HID charger function is not enumerating with connected host in
super speed due to missing super speed companion descriptor.
Hence add super speed companion descriptor to fix this issue.

Change-Id: I7d7d55adb364544f5eedacc10c463d3051eb799b
Signed-off-by: Mayank Rana <mrana@codeaurora.org>