rockchip: extend BOARDNAME

Now we have rk3588 support :)

Signed-off-by: Tianling Shen <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/16149
Signed-off-by: Hauke Mehrtens <[email protected]>

target/linux/rockchip/armv8/target.mk

@@ -1,8 +1,8 @@
 ARCH:=aarch64
 SUBTARGET:=armv8
-BOARDNAME:=RK33xx/RK356x boards (64 bit)
+BOARDNAME:=RK33xx/RK35xx boards (64 bit)
 
 define Target/Description
-	Build firmware image for Rockchip RK33xx devices.
+	Build firmware image for Rockchip RK33xx/RK35xx devices.
 	This firmware features a 64 bit kernel.
 endef