usb: renesas: remove unused DMA_ADDR_INVALID

DMA_ADDR_INVALID isn't used anymore, it's safe
to remove it.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/renesas_usbhs/fifo.c

@@ -32,7 +32,6 @@
  */
 void usbhs_pkt_init(struct usbhs_pkt *pkt)
 {
-	pkt->dma = DMA_ADDR_INVALID;
 	INIT_LIST_HEAD(&pkt->node);
 }
 

drivers/usb/renesas_usbhs/fifo.h

@@ -23,8 +23,6 @@
 #include <asm/dma.h>
 #include "pipe.h"
 
-#define	DMA_ADDR_INVALID	(~(dma_addr_t)0)
-
 struct usbhs_fifo {
 	char *name;
 	u32 port;	/* xFIFO */