staging: comedi: addi_eeprom: rename 'pc_PCIChipInformation'

This variable is the pointer to the string name of the eeprom type
found on the board. This name comes from the boardinfo of the
driver.

For aesthetic reasons, rename it to simply 'type'.

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