ide: make CONFIG_IDE_GENERIC default to N

These days, CONFIG_IDE_GENERIC causes more confusion and
misconfiguration than it helps.  Especially so because libata is
linked after the generic driver.  Default to N.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Cc: "P.C.Chan" <pc.chan@alcatel-lucent.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/Kconfig

@@ -304,9 +304,8 @@ comment "IDE chipset support/bugfixes"
 
 config IDE_GENERIC
 	tristate "generic/default IDE chipset support"
-	default y
 	help
-	  If unsure, say Y.
+	  If unsure, say N.
 
 config BLK_DEV_CMD640
 	bool "CMD640 chipset bugfix/support"