greybus: es2: fix driver name collision with es1

Both ES1 and ES2 drivers cannot be loaded due to a driver name conflict.
Give ES2 driver the correct name.

Signed-off-by: Rob Herring <rob.herring@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/es2.c

@@ -686,7 +686,7 @@ error:
 }
 
 static struct usb_driver es1_ap_driver = {
-	.name =		"es1_ap_driver",
+	.name =		"es2_ap_driver",
 	.probe =	ap_probe,
 	.disconnect =	ap_disconnect,
 	.id_table =	id_table,