usb: gadget: Disable L1 LPM capability

Disable USB L1 LPM functionality on MSM platforms by setting the
USB version as 0x200 for all High Speed Devices.
Add a module param, which when enabled will set the USB version as
0x210. Module param can be enabled as

echo Y > /sys/module/libcomposite/parameters/enable_l1_for_hs

Change-Id: I781a237b44e542c6089af36b7ce0a0665d3cd440
Signed-off-by: Azhar Shaikh <azhars@codeaurora.org>