commit ca0907b9 "edac: Remove the legacy EDAC ABI" broke mpc85xx_edac
in the following manner:

mpc85xx_edac.c:983:35: error: too few arguments to function 'edac_mc_alloc'

this patch puts back the missing 'layers' argument.

[mchehab@redhat.com: As Ben sent a similar fix, I added his SOB on this patch]
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NBen Collins <bcollins@ubuntu.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>