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/arm/icside.c b/drivers/ide/arm/icside.c
index 66f8262..543f8b5 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -461,10 +461,9 @@
 	return icside_dma_end(drive);
 }
 
-static int icside_dma_lostirq(ide_drive_t *drive)
+static void icside_dma_lost_irq(ide_drive_t *drive)
 {
 	printk(KERN_ERR "%s: IRQ lost\n", drive->name);
-	return 1;
 }
 
 static void icside_dma_init(ide_hwif_t *hwif)
@@ -491,7 +490,7 @@
 	hwif->ide_dma_end	= icside_dma_end;
 	hwif->ide_dma_test_irq	= icside_dma_test_irq;
 	hwif->ide_dma_timeout	= icside_dma_timeout;
-	hwif->ide_dma_lostirq	= icside_dma_lostirq;
+	hwif->dma_lost_irq	= icside_dma_lost_irq;
 
 	hwif->drives[0].autodma = hwif->autodma;
 	hwif->drives[1].autodma = hwif->autodma;