This two files where just copied from ptp-noposix
script/Lindent was run on them.

ptpd_netif.h has not been removed from ptp-noposix, because hosted compilation
needs it.

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>