sh: Fix libata build.

Drop virt_to_bus() from sg_dma_address() so libata builds.
While we're at it, move sg_dma_address() and sg_dma_len()
from pci.h to scatterlist.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

include/asm-sh/pci.h

@@ -87,15 +87,6 @@ static inline void pcibios_penalize_isa_irq(int irq, int active)
  */
 #define pci_dac_dma_supported(pci_dev, mask) (0)
 
-/* These macros should be used after a pci_map_sg call has been done
- * to get bus addresses of each of the SG entries and their lengths.
- * You should only work with the number of sg entries pci_map_sg
- * returns, or alternatively stop on the first sg_dma_len(sg) which
- * is 0.
- */
-#define sg_dma_address(sg)	(virt_to_bus((sg)->dma_address))
-#define sg_dma_len(sg)		((sg)->length)
-
 #ifdef CONFIG_PCI
 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 					enum pci_dma_burst_strategy *strat,

include/asm-sh/scatterlist.h

@@ -10,4 +10,13 @@ struct scatterlist {
 
 #define ISA_DMA_THRESHOLD (0x1fffffff)
 
+/* These macros should be used after a pci_map_sg call has been done
+ * to get bus addresses of each of the SG entries and their lengths.
+ * You should only work with the number of sg entries pci_map_sg
+ * returns, or alternatively stop on the first sg_dma_len(sg) which
+ * is 0.
+ */
+#define sg_dma_address(sg)	((sg)->dma_address)
+#define sg_dma_len(sg)		((sg)->length)
+
 #endif /* !(__ASM_SH_SCATTERLIST_H) */