Add commands to wr-streamer tool
There is a number of parameters that can be configured via WB and for
which commands should be implemented.
There is something done in this regards, the work is incomplete
(commented out in the code). Look for "TODO" in
tool/wr-streamers.c
Commands to be completed:
WRSTM_CMD_TX_ETHERTYPE,
WRSTM_CMD_TX_LOC_MAC,
WRSTM_CMD_TX_REM_MAC,
WRSTM_CMD_RX_ETHERTYPE,
WRSTM_CMD_RX_LOC_MAC,
WRSTM_CMD_RX_REM_MAC,