Staging: et131x: adding __init/__exit macros

Trivial patch which adds the __init/__exit macros to the module_init/
module_exit functions of ./staging/et131x/et131x_initpci.c

Greg, please have a look at the small patch and either pull it through
your staging tree, or please ack' it so Jiri can pull it through the trivial tree.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>