PPollConfig() configures the device specified by address
to respond to parallel polls.
The dio_line
(valid values are 1 through 8)
specifies which dio line the device being configured should use to send
back its parallel poll response. The line_sense
argument
specifies the polarity of the response. If line_sense
is nonzero, then the specified dio line will be asserted to indicate
that the 'individual status bit' (or 'ist') is 1. If sense
is zero, then the specified dio line will be asserted when ist is zero.