usb: gadget: renesas_usbhs: struct usbhs_pipe hold handler

packet handler had moved to struct usbhs_pipe from struct usbhsg_uep.
it is preparation of mod_host support

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/pipe.h b/drivers/usb/renesas_usbhs/pipe.h
index 1baa199..6760dff 100644
--- a/drivers/usb/renesas_usbhs/pipe.h
+++ b/drivers/usb/renesas_usbhs/pipe.h
@@ -37,6 +37,8 @@
 #define USBHS_PIPE_FLAGS_IS_DIR_IN		(1 << 1)
 #define USBHS_PIPE_FLAGS_IS_DIR_HOST		(1 << 2)
 
+	struct usbhs_pkt_handle *handler;
+
 	void *mod_private;
 };