powerpc/85xx: Add QE common init function

Define a QE init function in common file, and avoid
the same codes being duplicated in board files.

Signed-off-by: Xie Xiaobo <X.Xie@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>

diff --cc arch/powerpc/platforms/85xx/common.c
Simple merge

diff --cc arch/powerpc/platforms/85xx/mpc85xx.h
Simple merge

diff --cc arch/powerpc/platforms/85xx/mpc85xx_mds.c
Simple merge

diff --cc arch/powerpc/platforms/85xx/mpc85xx_rdb.c
Simple merge