staging: unisys: refactor controlvm_periodic_work()

Fix the CamelCase variable names:

gotACommand => got_command
Poll_Count => poll_count
Away => cleanup

Fix all references to use the new names. Remove the empty braces in the
while() and put in a trailing semicolon, for clarity.

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