fixed hotplugging for dvbnet
Signed-off-by: NMichal CIJOML Semler <cijoml@volny.cz>
Signed-off-by: NMarkus Rechberger <markus.rechberger@amd.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>