drivers/input/joystick/Kconfig: zhenhua.c needs BITREVERSE

It uses bitrev8(), so it must ensure that lib/bitrev.o gets included in
vmlinux.

Cc: Fengguang Wu <fengguang.wu@gmail.com>
Cc: yalin wang <yalin.wang2010@gmail.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/input/joystick/Kconfig

@@ -196,6 +196,7 @@ config JOYSTICK_TWIDJOY
 config JOYSTICK_ZHENHUA
 	tristate "5-byte Zhenhua RC transmitter"
 	select SERIO
+	select BITREVERSE
 	help
 	  Say Y here if you have a Zhen Hua PPM-4CH transmitter which is
 	  supplied with a ready to fly micro electric indoor helicopters