Staging: comedi: Fix 80-char line limit style issue in addi_apci_1500.c

Rename some very long functions in addi-data/hwdrv_apci1500.c.

Signed-off-by: Conrad Meyer <cse.cem@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>