usb: gadget: renesas_usbhs: modify function name of usbhs_set_device_xx()

it was device configuration setting function, not only speed.
This patch modify function name usbhs_set_device_speed() -> usbhs_set_device_config()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index 0fea6b6..016a34f 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -219,7 +219,7 @@
 /*
  *		device configuration
  */
-int usbhs_set_device_speed(struct usbhs_priv *priv, int devnum,
+int usbhs_set_device_config(struct usbhs_priv *priv, int devnum,
 			   u16 upphub, u16 hubport, u16 speed)
 {
 	struct device *dev = usbhs_priv_to_dev(priv);