staging: comedi: addi_apci_1564: don't allocate unused subdevices
The addi-data common code always allocates 7 subdevices. This driver cannot or will not use the ones we are currently allocating for analog input and output or EEPROM, so just don't allocate these subdevices at all. Signed-off-by: NChase Southwood <chase.southwood@gmail.com> Reviewed-by: NIan Abbott <abbotti@mev.co.uk> Reviewed-by: NH Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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