Kconfig:
--add CONFIG_READ_SFP_DIAG_ENABLE
libwr:
--add the function shw_sfp_update_dom to update only needed values in the future
--increase HAL_SHMEM_VERSION due to the changes in structures
wrs_dump_shmem
--add new fields
HAL:
--read DOM (Diagnostic Monitoring data) from SFP's eeprom at plug and once
  per second
PPSI:
--uplift hal shmem header
wrs_sfp_dump:
--support reading SFP's DOM from HAL

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>