arm: enable distro boot for bananapi-r2

This patch enables distro boot for the bananapi-r2, based on
a MediaTek mt7623n.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
diff --git a/include/configs/mt7623.h b/include/configs/mt7623.h
index faab091..fe436cc 100644
--- a/include/configs/mt7623.h
+++ b/include/configs/mt7623.h
@@ -45,11 +45,13 @@
 #define CONFIG_SYS_SDRAM_BASE		0x80000000
 
 /* This is needed for kernel booting */
-#define FDT_HIGH			"fdt_high=0xac000000\0"
+#define FDT_HIGH			"0xac000000"
 
-/* Extra environment variables */
-#define CONFIG_EXTRA_ENV_SETTINGS	\
-	FDT_HIGH
+#define ENV_MEM_LAYOUT_SETTINGS				\
+	"fdt_high=" FDT_HIGH "\0"			\
+	"kernel_addr_r=0x84000000\0"			\
+	"fdt_addr_r=" FDT_HIGH "\0"			\
+	"fdtfile=mt7623n-bananapi-bpi-r2.dtb" "\0"
 
 /* Ethernet */
 #define CONFIG_IPADDR			192.168.1.1
@@ -57,4 +59,18 @@
 
 #define CONFIG_SYS_MMC_ENV_DEV		0
 
+#ifdef CONFIG_DISTRO_DEFAULTS
+
+#define BOOT_TARGET_DEVICES(func)	\
+		func(MMC, mmc, 1)
+
+#include <config_distro_bootcmd.h>
+
+/* Extra environment variables */
+#define CONFIG_EXTRA_ENV_SETTINGS	\
+	ENV_MEM_LAYOUT_SETTINGS		\
+	BOOTENV
+
+#endif /* ifdef CONFIG_DISTRO_DEFAULTS*/
+
 #endif