usb: gadget: composite: fill bcdUSB as 0x0320 for SuperSpeed or higher speeds

The USB3CV version 2.1.80 (March 26, 2018) requires all devices
( gen1, gen2, single lane, dual lane) to return the value of 0x0320
in the bcdUSB field

Change-Id: Idec7b68f130dbabbffc951f5a5b0df5298cb23b1
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Git-commit: 1ef6c42afc76d2e88a7972e2f59082305d9945bc
Git-repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Manu Gautam <mgautam@codeaurora.org>