USB: Use menuconfig objects

commit 04d06ad0f1fdb499af84ae3d7969e2136a462f38 have added menuconfig support
for the whole USB Kconfig, but there are still menuconfig need for usb/serial,
usb/atm, and usb/gadget, so that the user can disable all the options in that
menu at once instead of having to disable each option separately.

Signed-off-by: Denis Cheng <crquan@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index 5df5d0f..c1e65df 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -2,10 +2,7 @@
 # USB Serial device configuration
 #
 
-menu "USB Serial Converter support"
-	depends on USB!=n
-
-config USB_SERIAL
+menuconfig USB_SERIAL
 	tristate "USB Serial Converter support"
 	depends on USB
 	---help---
@@ -20,6 +17,8 @@
 	  To compile this driver as a module, choose M here: the
 	  module will be called usbserial.
 
+if USB_SERIAL
+
 config USB_SERIAL_CONSOLE
 	bool "USB Serial Console device support (EXPERIMENTAL)"
 	depends on USB_SERIAL=y && EXPERIMENTAL
@@ -606,6 +605,4 @@
 	  To compile this driver as a module, choose M here: the
 	  module will be called usb-debug.
 
-
-endmenu
-
+endif # USB_SERIAL