Update arch/ to use sg helpers

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index 289d7e9..72fd871 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -102,8 +102,7 @@
 	int i;
 
 	for_each_sg(sgl, sg, nents, i) {
-		sg->dma_address = (dma_addr_t)page_address(sg->page)
-			+ sg->offset;
+		sg->dma_address = (dma_addr_t) sg_virt(sg);
 		sg->dma_length = sg->length;
 	}