usb gadget: fix omap_udc DMA regression

This resolves another regression caused by the "use omap_read/write
instead of __REG" patch:  the hardware address used for DMA to/from
the UDC became wrong.  Bug noted by Russell King.

Reported-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/gadget/omap_udc.c

@@ -787,7 +787,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel)
 			omap_set_dma_dest_params(ep->lch,
 				OMAP_DMA_PORT_TIPB,
 				OMAP_DMA_AMODE_CONSTANT,
-				(unsigned long) io_v2p(UDC_DATA_DMA),
+				UDC_DATA_DMA,
 				0, 0);
 		}
 	} else {
@@ -804,7 +804,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel)
 			omap_set_dma_src_params(ep->lch,
 				OMAP_DMA_PORT_TIPB,
 				OMAP_DMA_AMODE_CONSTANT,
-				(unsigned long) io_v2p(UDC_DATA_DMA),
+				UDC_DATA_DMA,
 				0, 0);
 			/* EMIFF or SDRC */
 			omap_set_dma_dest_burst_mode(ep->lch,