linuxdvb: fix compilation errors from PR
convert config check to rule

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
export and call mpegts_input_is_enabled

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
explicitly close all pids

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
always be verbose

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
don't create new pid when closing pid

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>