rockchip: Move to standard boot

Drop the distro-boot scripts and use standard boot instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Jonas Karlman <jonas@kwiboo.se>
diff --git a/include/configs/rk3128_common.h b/include/configs/rk3128_common.h
index 8736b14..d8269b0 100644
--- a/include/configs/rk3128_common.h
+++ b/include/configs/rk3128_common.h
@@ -22,11 +22,10 @@
 	"kernel_addr_r=0x62000000\0" \
 	"ramdisk_addr_r=0x64000000\0"
 
-#include <config_distro_bootcmd.h>
 #define CFG_EXTRA_ENV_SETTINGS \
 	ENV_MEM_LAYOUT_SETTINGS \
 	"fdt_file=" CONFIG_DEFAULT_FDT_FILE "\0" \
 	"partitions=" PARTS_DEFAULT \
-	BOOTENV
+	"boot_targets=" BOOT_TARGETS "\0"
 
 #endif