rockchip: rk3399: Add default env to support compressed kernel Image

Add default kernel_comp_addr_r and kernel_comp_size to support boot
from compressed kernel Image, this space is temporarily used during
decompress according to README.distro.

Reported-by: Tian Yuanhao <tianyuanhao@aliyun.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/include/configs/rk3399_common.h b/include/configs/rk3399_common.h
index e63ebb1..4121d5e 100644
--- a/include/configs/rk3399_common.h
+++ b/include/configs/rk3399_common.h
@@ -53,7 +53,9 @@
 	"pxefile_addr_r=0x00600000\0" \
 	"fdt_addr_r=0x01f00000\0" \
 	"kernel_addr_r=0x02080000\0" \
-	"ramdisk_addr_r=0x06000000\0"
+	"ramdisk_addr_r=0x06000000\0" \
+	"kernel_comp_addr_r=0x08000000\0" \
+	"kernel_comp_size=0x2000000\0"
 
 #ifndef ROCKCHIP_DEVICE_SETTINGS
 #define ROCKCHIP_DEVICE_SETTINGS