wireless: at76c50x: follow rename pack_hex_byte to hex_byte_pack

There is no functional change.

Signed-off-by: Andy Shevchenko <[e-mail]>
Acked-by: John W. Linville <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/net/wireless/at76c50x-usb.c

···
 		goto exit;
 
 	while (len--) {
-		obuf = pack_hex_byte(obuf, *ibuf++);
+		obuf = hex_byte_pack(obuf, *ibuf++);
 		*obuf++ = '-';
 	}
 	obuf--;