usb: musb: move usb_phy_generic_{un,}register calls to probe()/remove()

This patch is in preparation to supporting
calling those functions multiple times.

Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 8d4a819..e1da199 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -1065,7 +1065,6 @@
 	void __iomem		*sync = NULL;
 	int			ret;
 
-	usb_phy_generic_register();
 	musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
 	if (IS_ERR_OR_NULL(musb->xceiv))
 		return -EPROBE_DEFER;
@@ -1117,7 +1116,6 @@
 			iounmap(sync);
 
 		usb_put_phy(musb->xceiv);
-		usb_phy_generic_unregister();
 	}
 	return ret;
 }
@@ -1133,7 +1131,6 @@
 	iounmap(musb->sync_va);
 
 	usb_put_phy(musb->xceiv);
-	usb_phy_generic_unregister();
 	return 0;
 }
 
@@ -1176,6 +1173,7 @@
 
 	pdata->platform_ops		= &tusb_ops;
 
+	usb_phy_generic_register();
 	platform_set_drvdata(pdev, glue);
 
 	memset(musb_resources, 0x00, sizeof(*musb_resources) *
@@ -1224,6 +1222,7 @@
 	struct tusb6010_glue		*glue = platform_get_drvdata(pdev);
 
 	platform_device_unregister(glue->musb);
+	usb_phy_generic_unregister();
 	kfree(glue);
 
 	return 0;