usb: gadget: u_ether: convert into module

u_ether.c has been #include'd by all gadgets which implement
USB Ethernet functions. In order to add configfs support,
the f_ecm.c, f_eem.c, f_ncm.c, f_subset.c, f_rndis.c need to be
converted into modules and must not be #include'd. Consequently,
the u_ether.c needs to be a module too, in a manner similar
to u_serial.c. The resulting module should not take any parameters,
so they are pushed to the current users of it, that is ether.c,
g_ffs.c, multi.c, ncm.c, nokia.c.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/gadget/ncm.c b/drivers/usb/gadget/ncm.c
index 3b02fd4..e411135 100644
--- a/drivers/usb/gadget/ncm.c
+++ b/drivers/usb/gadget/ncm.c
@@ -37,7 +37,6 @@
  * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
  */
 #include "f_ncm.c"
-#include "u_ether.c"
 
 /*-------------------------------------------------------------------------*/
 
@@ -54,6 +53,8 @@
 /*-------------------------------------------------------------------------*/
 USB_GADGET_COMPOSITE_OPTIONS();
 
+USB_ETHERNET_MODULE_PARAMETERS();
+
 static struct usb_device_descriptor device_desc = {
 	.bLength =		sizeof device_desc,
 	.bDescriptorType =	USB_DT_DEVICE,
@@ -112,7 +113,7 @@
 };
 
 struct eth_dev *the_dev;
-static u8 hostaddr[ETH_ALEN];
+static u8 host_mac[ETH_ALEN];
 
 /*-------------------------------------------------------------------------*/
 
@@ -125,7 +126,7 @@
 		c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
 	}
 
-	return ncm_bind_config(c, hostaddr, the_dev);
+	return ncm_bind_config(c, host_mac, the_dev);
 }
 
 static struct usb_configuration ncm_config_driver = {
@@ -144,7 +145,8 @@
 	int			status;
 
 	/* set up network link layer */
-	the_dev = gether_setup(cdev->gadget, hostaddr);
+	the_dev = gether_setup(cdev->gadget, dev_addr, host_addr, host_mac,
+			       qmult);
 	if (IS_ERR(the_dev))
 		return PTR_ERR(the_dev);