ide: make ide_dma_lost_irq() available also for CONFIG_BLK_DEV_IDEDMA_SFF=n

Make ide_dma_lost_irq() available also for CONFIG_BLK_DEV_IDEDMA_SFF=n
and convert {ics,au1xxx-}ide.c to use it.

While at it:
- use EXPORT_SYMBOL_GPL() to match the rest of SFF DMA functions

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 22f7451..ae4a25d 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1437,11 +1437,12 @@
 extern void ide_dma_start(ide_drive_t *);
 int ide_dma_end(ide_drive_t *);
 int ide_dma_test_irq(ide_drive_t *);
-extern void ide_dma_lost_irq(ide_drive_t *);
 extern void ide_dma_timeout(ide_drive_t *);
 extern const struct ide_dma_ops sff_dma_ops;
 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
 
+void ide_dma_lost_irq(ide_drive_t *);
+
 #else
 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }