[SPARC64]: Fix non-PCI build, reported by David Dillow.

include/asm-sparc64/dma-mapping.h

+#ifndef _ASM_SPARC64_DMA_MAPPING_H
+#define _ASM_SPARC64_DMA_MAPPING_H
+
 #include <linux/config.h>
 
 #ifdef CONFIG_PCI
 #include <asm-generic/dma-mapping.h>
-#endif
+#else
+
+static inline void *dma_alloc_coherent(struct device *dev, size_t size,
+			 dma_addr_t *dma_handle, int flag)
+{
+	BUG();
+	return NULL;
+}
+
+static inline void dma_free_coherent(struct device *dev, size_t size,
+		       void *vaddr, dma_addr_t dma_handle)
+{
+	BUG();
+}
+
+#endif /* PCI */
+
+#endif /* _ASM_SPARC64_DMA_MAPPING_H */