usb: gadget: udc: renesas_usb3: make const array max_packet_array static

Don't populate the const array max_packet_array on the stack, instead make
it static. Makes the object code smaller by over 90 bytes:

Before:
text data bss dec hex filename
34337 5612 128 40077 9c8d renesas_usb3.o

After:
text data bss dec hex filename
34149 5708 128 39985 9c31 renesas_usb3.o

(gcc version 7.2.0 x86_64)

Signed-off-by: Colin Ian King <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/gadget/udc/renesas_usb3.c

···
 				const struct usb_endpoint_descriptor *desc)
 {
 	int i;
-	const u32 max_packet_array[] = {8, 16, 32, 64, 512};
+	static const u32 max_packet_array[] = {8, 16, 32, 64, 512};
 	u32 mpkt = PN_RAMMAP_MPKT(1024);
 
 	for (i = 0; i < ARRAY_SIZE(max_packet_array); i++) {