rockchip: fix sysupgrade for Radxa ROCK Pi S

SUPPORTED_DEVICES is required for Radxa ROCK Pi S.

Signed-off-by: FUKAUMI Naoki <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/16167
Signed-off-by: Hauke Mehrtens <[email protected]>

target/linux/rockchip/image/armv8.mk

@@ -161,6 +161,7 @@ define Device/radxa_rock-pi-s
   DEVICE_VENDOR := Radxa
   DEVICE_MODEL := ROCK Pi S
   SOC := rk3308
+  SUPPORTED_DEVICES := radxa,rockpis
   BOOT_SCRIPT := rock-pi-s
   DEVICE_PACKAGES := kmod-rtw88-8723ds kmod-usb-net-cdc-ncm kmod-usb-net-rndis wpad-basic-mbedtls
 endef