usb: gadget: ss_ep_in_comp_desc can be static

drivers/usb/gadget/legacy/printer.c:222:34: sparse: symbol 'ss_ep_in_comp_desc' was not declared. Should it be static?
drivers/usb/gadget/legacy/printer.c:234:34: sparse: symbol 'ss_ep_out_comp_desc' was not declared. Should it be static?
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/gadget/legacy/printer.c

@@ -219,7 +219,7 @@ static struct usb_endpoint_descriptor ss_ep_in_desc = {
 	.wMaxPacketSize =       cpu_to_le16(1024),
 };
 
-struct usb_ss_ep_comp_descriptor ss_ep_in_comp_desc = {
+static struct usb_ss_ep_comp_descriptor ss_ep_in_comp_desc = {
 	.bLength =              sizeof(ss_ep_in_comp_desc),
 	.bDescriptorType =      USB_DT_SS_ENDPOINT_COMP,
 };
@@ -231,7 +231,7 @@ static struct usb_endpoint_descriptor ss_ep_out_desc = {
 	.wMaxPacketSize =       cpu_to_le16(1024),
 };
 
-struct usb_ss_ep_comp_descriptor ss_ep_out_comp_desc = {
+static struct usb_ss_ep_comp_descriptor ss_ep_out_comp_desc = {
 	.bLength =              sizeof(ss_ep_out_comp_desc),
 	.bDescriptorType =      USB_DT_SS_ENDPOINT_COMP,
 };