2.6.24: add missing symbol CONFIG_USB_SERIAL_CH431

SVN-Revision: 10547

target/linux/generic-2.6/config-2.6.24

@@ -1566,6 +1566,7 @@ CONFIG_USB_SERIAL_AIRCABLE=m
 CONFIG_USB_SERIAL_AIRPRIME=m
 CONFIG_USB_SERIAL_ARK3116=m
 CONFIG_USB_SERIAL_BELKIN=m
+CONFIG_USB_SERIAL_CH341=m
 CONFIG_USB_SERIAL_CP2101=m
 CONFIG_USB_SERIAL_CYBERJACK=m
 CONFIG_USB_SERIAL_CYPRESS_M8=m