MC_CMD_LICENSING_IN_LEN
EFX_MCDI_DECLARE_BUF(payload, MC_CMD_LICENSING_IN_LEN, 0);
req.emr_in_length = MC_CMD_LICENSING_IN_LEN;
EFX_MCDI_DECLARE_BUF(payload, MC_CMD_LICENSING_IN_LEN,
req.emr_in_length = MC_CMD_LICENSING_IN_LEN;