uboot-imx

Blackfin: bfin_mac: cleanup pointer/casts for aliasing issues

Redo how pointers are managed to get rid of ugly casts and strict pointer
aliasing issues that are highlighted by gcc 4.3.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Ben Warren <biggerbadderben@gmail.com>