[IA64] Move sg_dma_{len,address} from pci.h to scatterlist.h

IA64 is in a tiny minority providing these defines in pci.h.
Almost everyone else has them in scatterlist.h

Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/include/asm-ia64/scatterlist.h b/include/asm-ia64/scatterlist.h
index 834a189..9dbea88 100644
--- a/include/asm-ia64/scatterlist.h
+++ b/include/asm-ia64/scatterlist.h
@@ -25,4 +25,7 @@
  */
 #define ISA_DMA_THRESHOLD	0xffffffff
 
+#define sg_dma_len(sg)		((sg)->dma_length)
+#define sg_dma_address(sg)	((sg)->dma_address)
+
 #endif /* _ASM_IA64_SCATTERLIST_H */