staging: comedi: adv_pci_dio: Add a counter subdevice to PCI-1751
The Advantech PCI-1751 has a 8254 counter chip on board. Add it to the
device as a counter subdevice. Apparently the counter can generate
interrupts although the driver does not currently use this capability.
Original patch by Ivan Russkih (Иван Русских) <vanekrus at gmail dot
com>.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>