driver: main.c: fix up coding style errors
driver: main.c: fix up coding style errors

This removes the remaining coding style errors, now all that is left is
"warnings".

Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

angeloc/sysdig,angeloc/sysdig,angeloc/sysdig,angeloc/sysdig,angeloc/sysdig