ide: add hwif->ack_intr hook

* Add hwif->ack_intr hook and use it instead of hwif->hw.ack_intr.

* Add missing brackets to cris-v32 and powerpc ide_ack_intr() macros.

Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/include/asm-m68k/ide.h b/include/asm-m68k/ide.h
index f9ffb2c..909c6df 100644
--- a/include/asm-m68k/ide.h
+++ b/include/asm-m68k/ide.h
@@ -137,7 +137,7 @@
 #endif /* CONFIG_BLK_DEV_FALCON_IDE */
 
 #define IDE_ARCH_ACK_INTR
-#define ide_ack_intr(hwif)	((hwif)->hw.ack_intr ? (hwif)->hw.ack_intr(hwif) : 1)
+#define ide_ack_intr(hwif)	((hwif)->ack_intr ? (hwif)->ack_intr(hwif) : 1)
 
 #endif /* __KERNEL__ */
 #endif /* _M68K_IDE_H */