staging: unisys: fix CamelCase in uisqueue_put_cmdrsp_with_lock_client

Clean up CamelCase names:
issueInterruptIfEmpty => issue_irq_if_empty
interruptHandle => irq_handle

Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>