uio_netx: Add support for netPLC cards

This patch adds support for Hilscher / IBHsoftec netPLC cards to uio_netx userspace IO driver.

Changes from v1 -> v2:
Fixed whitespace errors reported by scripts/checkpatch.pl which were caused by email client.

Signed-off-by: Daniel Trautmann <dtrautmann@ibhsoftec-sps.de>
Signed-off-by: "Hans J. Koch" <hjk@hansjkoch.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>