cmd640: fix dependency on IDE_GENERIC

Make BLK_DEV_CMD640 select IDE_GENERIC.
Acked-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/Kconfig

@@ -327,6 +327,7 @@ config BLK_DEV_PLATFORM
 config BLK_DEV_CMD640
 	bool "CMD640 chipset bugfix/support"
 	depends on X86
+	select IDE_GENERIC
 	---help---
 	  The CMD-Technologies CMD640 IDE chip is used on many common 486 and
 	  Pentium motherboards, usually in combination with a "Neptune" or