edac: rename edac_core.h to edac_mc.h

Now, all left at edac_core.h are at drivers/edac/edac_mc.c,
so rename it to edac_mc.h.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/drivers/edac/amd76x_edac.c b/drivers/edac/amd76x_edac.c
index 3a501b5..a745027 100644
--- a/drivers/edac/amd76x_edac.c
+++ b/drivers/edac/amd76x_edac.c
@@ -17,7 +17,7 @@
 #include <linux/pci.h>
 #include <linux/pci_ids.h>
 #include <linux/edac.h>
-#include "edac_core.h"
+#include "edac_module.h"
 
 #define AMD76X_REVISION	" Ver: 2.0.2"
 #define EDAC_MOD_STR	"amd76x_edac"