[openwrt/openwrt] rockchip: add support for Radxa Rock Pi 4

[LEDE Commits]

blocktrron pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/5b5469f87a56b593897ed43c492120e61e19a3b8

commit 5b5469f87a56b593897ed43c492120e61e19a3b8
Author: Marty Jones <mj8263788 at gmail.com>
AuthorDate: Fri Sep 25 14:00:40 2020 -0400

    rockchip: add support for Radxa Rock Pi 4
    
    This adds basic support for Radxa Rock Pi 4
    
    Specification:
      - RAM:      1 GB/ 2 GB/4 GB LPDDR4
    
      - SoC:      Rockchip RK3399
      - CPU:      64bit hexa core processor
                  Dual Cortex-A72, freqency 1.8Ghz
                  with quad Cortex-A53, frequency 1.4Ghz
      - USB:      USB 3.0 OTG x1
                  hardware switch for host/device switch, upper one
                  USB 3.0 HOST x1
                  dedicated USB3.0 channel, lower one
                  USB 2.0 HOST x2
      - Ethernet: 1x GbE
      - Storage:  eMMC module
                  uSD card
                  M.2 SSD
      - Wireless: 802.11 ac wifi
                  Bluetooth 5.0
                  currently not supported
    
     firmware Installation
     ======================
     gzip -d xxx.img.gz, then dd the .img to SD/eMMC
     ======================
    
     Device Tested: ROCK PI 4 Model B v1.3
    
    Signed-off-by: Marty Jones <mj8263788 at gmail.com>
---
 target/linux/rockchip/image/armv8.mk | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/target/linux/rockchip/image/armv8.mk b/target/linux/rockchip/image/armv8.mk
index 6ba9874abf..4a46cb7336 100644
--- a/target/linux/rockchip/image/armv8.mk
+++ b/target/linux/rockchip/image/armv8.mk
@@ -23,3 +23,12 @@ define Device/pine64_rockpro64
   IMAGE/sysupgrade.img.gz := boot-common | boot-script | pine64-img | gzip | append-metadata
 endef
 TARGET_DEVICES += pine64_rockpro64
+
+define Device/radxa_rock-pi-4
+  DEVICE_VENDOR := Radxa
+  DEVICE_MODEL := Rock Pi 4
+  SOC := rk3399
+  UBOOT_DEVICE_NAME := rock-pi-4-rk3399
+  IMAGE/sysupgrade.img.gz := boot-common | boot-script | pine64-img | gzip | append-metadata
+endef
+TARGET_DEVICES += radxa_rock-pi-4