Input: move USB tablets under drivers/input/tablet

This will allow concentrating all input devices in one place
in {menu|x|q}config.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig
index 9623231..0e9b695 100644
--- a/drivers/input/Kconfig
+++ b/drivers/input/Kconfig
@@ -153,6 +153,8 @@
 
 source "drivers/input/joystick/Kconfig"
 
+source "drivers/input/tablet/Kconfig"
+
 source "drivers/input/touchscreen/Kconfig"
 
 source "drivers/input/misc/Kconfig"