arm: add initial support for Amlogic P212 based on Meson GXL family

This adds platform code for the Amlogic P212 reference board based on a
Meson GXL (S905X) SoC with the Meson GXL configuration.

This initial submission only supports UART and MMC/SDCard, support for the
internal Ethernet PHY in Work In Progress.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Beniamino Galvani <b.galvani@gmail.com>
diff --git a/include/configs/p212.h b/include/configs/p212.h
new file mode 100644
index 0000000..0477384
--- /dev/null
+++ b/include/configs/p212.h
@@ -0,0 +1,22 @@
+/*
+ * Configuration for Amlogic P212
+ *
+ * Copyright (C) 2017 Baylibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#define CONFIG_MISC_INIT_R
+
+/* Serial setup */
+#define CONFIG_CONS_INDEX		0
+
+#define MESON_FDTFILE_SETTING "fdtfile=amlogic/meson-gxl-s905x-p212.dtb\0"
+
+#include <configs/meson-gxbb-common.h>
+
+#endif /* __CONFIG_H */