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/multi.c b/drivers/usb/gadget/multi.c
index 4a45e80..cdb8dbf 100644
--- a/drivers/usb/gadget/multi.c
+++ b/drivers/usb/gadget/multi.c
@@ -49,10 +49,12 @@
 #  include "f_rndis.c"
 #  include "rndis.c"
 #endif
-#include "u_ether.c"
+#include "u_ether.h"
 
 USB_GADGET_COMPOSITE_OPTIONS();
 
+USB_ETHERNET_MODULE_PARAMETERS();
+
 /***************************** Device Descriptor ****************************/
 
 #define MULTI_VENDOR_NUM	0x1d6b	/* Linux Foundation */
@@ -133,7 +135,7 @@
 
 static struct fsg_common fsg_common;
 
-static u8 hostaddr[ETH_ALEN];
+static u8 host_mac[ETH_ALEN];
 
 static struct usb_function_instance *fi_acm;
 static struct eth_dev *the_dev;
@@ -152,7 +154,7 @@
 		c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
 	}
 
-	ret = rndis_bind_config(c, hostaddr, the_dev);
+	ret = rndis_bind_config(c, host_mac, the_dev);
 	if (ret < 0)
 		return ret;
 
@@ -216,7 +218,7 @@
 		c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
 	}
 
-	ret = ecm_bind_config(c, hostaddr, the_dev);
+	ret = ecm_bind_config(c, host_mac, the_dev);
 	if (ret < 0)
 		return ret;
 
@@ -280,7 +282,8 @@
 	}
 
 	/* 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);