[SPARC64]: Compute dma_end argument to sabre_pbm_init() correctly.

virtual-dma property layout is [start, size] not [start, end].
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/sparc64/kernel/pci_sabre.c

@@ -1465,5 +1465,5 @@ void sabre_init(struct device_node *dp, char *model_name)
 	/*
 	 * Look for APB underneath.
 	 */
-	sabre_pbm_init(p, dp, vdma[0], vdma[1]);
+	sabre_pbm_init(p, dp, vdma[0], vdma[0] + vdma[1]);
 }