uboot-imx

km/powerpc82xx: remove unused function

commit 0a4f88b98 removed the usage of our setports function, but the
function itself were not removed. So toss it it's dead code.

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>