powerpc/dts: Unify B4 mux nodes

Signed-off-by: Igal Liberman <Igal.Liberman@freescale.com>
Change-Id: Ic5f28f7b492b708f00a5ff74dda723ce5e1da0ba
Signed-off-by: Scott Wood <scottwood@freescale.com>
3 files changed