V4L/DVB (8335): dvb-ttpci: Fix build with CONFIG_INPUT_EVDEV=n (Bug #11042)

Fix build with CONFIG_INPUT_EVDEV=n (Bug #11042).
Thanks to Toralf Frster <toralf.foerster@gmx.de> for reporting.

Thanks-to: Toralf Frster <toralf.foerster@gmx.de>

Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>