V4L/DVB: gspca_stv06xx: Add support for camera button

Only tested with an stv6422 based cam, as that is the only stv06xx cam
I have with a button.

Signed-off-by: Hans de Goede <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
1 file changed