usb: atm: cxacru: Fix typo in comment

Change 'contol' to 'control'.

Signed-off-by: zuoqilin <zuoqilin@yulong.com>
Link: https://lore.kernel.org/r/20210521095804.773-1-zuoqilin1@163.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>