This patch is to replace previous way of managing ppsi configuration file.
Instead of copying proper file based on chosen configuration PTP_* option in
dot-config, now ppsi.conf file is assembled based on PORTXX_PARAMS fields in
dot-config.

--Kconfig:
  - remove options:
    - PTP_WR_DEFAULT
    - PTP_WR_MASTER
    - PTP_WR_AUTO
    - PTP_WR_AUTO_UDP
    - PTP_NONWR_UDP_ALL
  - add PTP_PORT_PARAMS (to let assembly ppsi.conf file)
  - keep option PTP_CUSTOM to use user's ppsi configuration file
  - move PTP_CUSTOM_FILENAME to different position
  - add property "proto" to PORTXX_PARAMS
--remove predefined ppsi configs (not to be used anymore) from /wr/etc/ppsi-config-pool/:
    - WR_DEFAULT
    - WR_MASTER
    - WR_AUTO
    - WR_AUTO_UDP
    - NONWR_UDP_ALL
--add new script assembly_ppsi_conf.sh to create ppsi.conf file.
  ppsi.conf file is assembled based on PORTXX_PARAMS fields like port name,
  proto(col) and role. All master, slave or auto ports are set to use whiterabbit
  extension
--add file /wr/etc/ppsi-pre.conf to keep top of ppsi.conf including global
  options (later all options may be moved to dot-conf)
--modivy apply_dot-config to use assembly_ppsi_conf.sh instead of old way.

NOTE: update of documentation is missing
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>