staging: unisys: add missing brackets in info_debugfs_read()

The if statement in info_debugfs_read() needs another set of brackets for the
else clause.

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>