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/edac_mc.c b/drivers/edac/edac_mc.c
index d2ea9c4..4ff5116 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -30,7 +30,7 @@
 #include <linux/bitops.h>
 #include <asm/uaccess.h>
 #include <asm/page.h>
-#include "edac_core.h"
+#include "edac_mc.h"
 #include "edac_module.h"
 #include <ras/ras_event.h>