ARM: mx6: use common CPU errata config options

Now that U-Boot has common CONFIG_ options to work around some ARM CPU
errata, enable the relevant options on MX6, and remove the custom
lowlevel_init.S, since it's just duplicated code now.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Jason Liu <r64343@freescale.com>
diff --git a/include/configs/mx6_common.h b/include/configs/mx6_common.h
new file mode 100644
index 0000000..b333937
--- /dev/null
+++ b/include/configs/mx6_common.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __MX6_COMMON_H
+#define __MX6_COMMON_H
+
+#define CONFIG_ARM_ERRATA_743622
+#define CONFIG_ARM_ERRATA_751472
+
+#endif