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/ether.c b/drivers/usb/gadget/ether.c
index 56c8eca..75418c7 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -107,11 +107,12 @@
 #include "rndis.c"
 #endif
 #include "f_eem.c"
-#include "u_ether.c"
 
 /*-------------------------------------------------------------------------*/
 USB_GADGET_COMPOSITE_OPTIONS();
 
+USB_ETHERNET_MODULE_PARAMETERS();
+
 /* DO NOT REUSE THESE IDs with a protocol-incompatible driver!!  Ever!!
  * Instead:  allocate your own, using normal USB-IF procedures.
  */
@@ -206,7 +207,7 @@
 	NULL,
 };
 
-static u8 hostaddr[ETH_ALEN];
+static u8 host_mac[ETH_ALEN];
 static struct eth_dev *the_dev;
 /*-------------------------------------------------------------------------*/
 
@@ -224,7 +225,7 @@
 		c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
 	}
 
-	return rndis_bind_config(c, hostaddr, the_dev);
+	return rndis_bind_config(c, host_mac, the_dev);
 }
 
 static struct usb_configuration rndis_config_driver = {
@@ -259,9 +260,9 @@
 	if (use_eem)
 		return eem_bind_config(c, the_dev);
 	else if (can_support_ecm(c->cdev->gadget))
-		return ecm_bind_config(c, hostaddr, the_dev);
+		return ecm_bind_config(c, host_mac, the_dev);
 	else
-		return geth_bind_config(c, hostaddr, the_dev);
+		return geth_bind_config(c, host_mac, the_dev);
 }
 
 static struct usb_configuration eth_config_driver = {
@@ -279,7 +280,8 @@
 	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);