linux-phytec-ti

usb: gadget: zero: module parameters can be static

g_zero's module parameters can, and should, be
static. This fixes sparse warnings.

Cc: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>