staging: unisys: Fix warnings regarding lines over 80 characters in virthba.c

This patch fixes warnings generated by checkpatch script regarding lines
over 80 characters long.

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>