USB: gadget: serial: Fix section mismatch warning

The super speed endpoint descriptors are marked as __initdata and
referenced from a non init function.  This results a section mismatch
warning.  This warning comes only when CONFIG_USB_GADGET_SUPERSPEED
is enabled.

Change-Id: I7734e2c85da96610366af35ecdd59a72d3169287
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
diff --git a/drivers/usb/gadget/f_serial.c b/drivers/usb/gadget/f_serial.c
index 3d6ceaa..649fe14 100644
--- a/drivers/usb/gadget/f_serial.c
+++ b/drivers/usb/gadget/f_serial.c
@@ -225,26 +225,26 @@
 	NULL,
 };
 
-static struct usb_endpoint_descriptor gser_ss_in_desc __initdata = {
+static struct usb_endpoint_descriptor gser_ss_in_desc = {
 	.bLength =		USB_DT_ENDPOINT_SIZE,
 	.bDescriptorType =	USB_DT_ENDPOINT,
 	.bmAttributes =		USB_ENDPOINT_XFER_BULK,
 	.wMaxPacketSize =	cpu_to_le16(1024),
 };
 
-static struct usb_endpoint_descriptor gser_ss_out_desc __initdata = {
+static struct usb_endpoint_descriptor gser_ss_out_desc = {
 	.bLength =		USB_DT_ENDPOINT_SIZE,
 	.bDescriptorType =	USB_DT_ENDPOINT,
 	.bmAttributes =		USB_ENDPOINT_XFER_BULK,
 	.wMaxPacketSize =	cpu_to_le16(1024),
 };
 
-static struct usb_ss_ep_comp_descriptor gser_ss_bulk_comp_desc __initdata = {
+static struct usb_ss_ep_comp_descriptor gser_ss_bulk_comp_desc = {
 	.bLength =              sizeof gser_ss_bulk_comp_desc,
 	.bDescriptorType =      USB_DT_SS_ENDPOINT_COMP,
 };
 
-static struct usb_descriptor_header *gser_ss_function[] __initdata = {
+static struct usb_descriptor_header *gser_ss_function[] = {
 	(struct usb_descriptor_header *) &gser_interface_desc,
 	(struct usb_descriptor_header *) &gser_ss_in_desc,
 	(struct usb_descriptor_header *) &gser_ss_bulk_comp_desc,