raw/ifpga/base: store private features in FME and port

raw/ifpga/base: store private features in FME and port

Get private features attribute like size, id, address after
enumeration, and insert into FEM or Port dedicate list.

when initial the private feature driver, we just compare the
private feature id between the list and feature drivers array
to match the proper drivers.

This patch avoid the hardcore in feature_info array in previous
implementation. and the same time we can use one driver for mulitple
devices which the id is the same.

Signed-off-by: Tianfei Zhang <tianfei.zhang@intel.com>