edac: add support for Calxeda highbank L2 cache ecc

Add support for L2 ECC on Calxeda highbank platform.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile
index 44f2044..7e5129a 100644
--- a/drivers/edac/Makefile
+++ b/drivers/edac/Makefile
@@ -57,3 +57,4 @@
 obj-$(CONFIG_EDAC_TILE)			+= tile_edac.o
 
 obj-$(CONFIG_EDAC_HIGHBANK_MC)	+= highbank_mc_edac.o
+obj-$(CONFIG_EDAC_HIGHBANK_L2)	+= highbank_l2_edac.o