DMA memory for the TX ring should be aligned at RL_RING_ALIGN, not RE_ETHER_ALIGN.
DMA memory for the TX ring should be aligned at RL_RING_ALIGN,
not RE_ETHER_ALIGN.

From tsutsui@NetBSD

Tested on alpha/amd64/armish/i386/sparc64

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars