Fix exporting of consistent_{alloc,free,sync} on PPC8xx/4xx.

arch/ppc/kernel/ppc_ksyms.c

@@ -79,6 +79,10 @@ extern unsigned char __res[];
 extern unsigned long ret_to_user_hook;
 extern unsigned long mm_ptov (unsigned long paddr);
 
+extern void *consistent_alloc(int gfp, size_t size, dma_addr_t *dma_handle);
+extern void consistent_free(void *vaddr);
+extern void consistent_sync(void *vaddr, size_t size, int direction);
+
 EXPORT_SYMBOL(clear_page);
 EXPORT_SYMBOL(do_signal);
 EXPORT_SYMBOL(do_syscall_trace);