[mc1322x] Extra two bytes on xmit

[Jon Smirl]

When I change len + 4 to len + 2, the RS (solicitation) packets are
correct and the router responds with RA.
Why is this +4?

	/* set dma tx pointer to the payload */
	/* and set the tx len */
	reg32(MACA_TXLEN) = (uint32_t)(len+2);
	reg32(MACA_DMATX) = (uint32_t)tx_buf;
	reg32(MACA_DMARX) = (uint32_t)rx_buf;
	reg32(MACA_TMREN) = 0;


We aren't hearing the RAs when they come back.

-- 
Jon Smirl
jonsmirl at gmail.com