ide: make void and rename ide_dma_lostirq() method

Since ide_dma_lostirq() method's result is discarded, make it return 'void'.
While at it, rename the method to dma_lost_irq(), drop the '__' prefix from the
default method's name, and do some cleanups in this method driver-wise:

- in aec62xx.c, rename the method in accordance with other drivers, and get rid
  of unnecessary variables there;

- in pdc202xx_old.c, define/use 'hwif' variable;

- in sgiioc4.c, rearrange the code to call the resetproc() method directly.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 0cd76bf..8a8674d 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -496,7 +496,7 @@
 	hwif->ide_dma_clear_irq		= tmp_hwif->ide_dma_clear_irq;
 	hwif->dma_host_on		= tmp_hwif->dma_host_on;
 	hwif->dma_host_off		= tmp_hwif->dma_host_off;
-	hwif->ide_dma_lostirq		= tmp_hwif->ide_dma_lostirq;
+	hwif->dma_lost_irq		= tmp_hwif->dma_lost_irq;
 	hwif->ide_dma_timeout		= tmp_hwif->ide_dma_timeout;
 
 	hwif->OUTB			= tmp_hwif->OUTB;