staging: comedi: addi_apci_3120: introduce apci3120_timer_write()

Introduce a helper function to select a timer and write a value to it.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
Simple merge

diff --cc drivers/staging/comedi/drivers/addi_apci_3120.c
Simple merge