ide/Kconfig: add missing range check for IDE_MAX_HWIFS

ide_hwif_to_major[] has only 10 entries as there are 10 major numbers
reserved for IDE (if somebody needs more it shouldn't be hard to fix).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/Kconfig

@@ -57,6 +57,7 @@ if IDE
 config IDE_MAX_HWIFS
 	int "Max IDE interfaces"
 	depends on ALPHA || SUPERH || IA64 || EMBEDDED
+	range 1 10
 	default 4
 	help
 	  This is the maximum number of IDE hardware interfaces that will