staging: unisys: clean up typecasts in uislib.c

Remove all extraneous spaces from typecasts in uislib.c.

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