rockchip: cosmetic: Move rock board to its correct position

Somehow 43b5c78d ("rockchip: cosmetic: Sort RK3288 boards") moved
the rock board in between some rk3288 board, probably as a result of
rebasing.

So move it back to its original position above all rk3288 boards.

Fixes: 43b5c78d ("rockchip: cosmetic: Sort RK3288 boards")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Simon Glass <sjg@chromium.org>

arch/arm/dts/Makefile

@@ -29,12 +29,12 @@ dtb-$(CONFIG_EXYNOS5) += exynos5250-arndale.dtb \
 dtb-$(CONFIG_EXYNOS7420) += exynos7420-espresso7420.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += \
 	rk3036-sdk.dtb \
+	rk3188-radxarock.dtb \
 	rk3288-evb.dtb \
 	rk3288-fennec.dtb \
 	rk3288-firefly.dtb \
 	rk3288-miqi.dtb \
 	rk3288-popmetal.dtb \
-	rk3188-radxarock.dtb \
 	rk3288-rock2-square.dtb \
 	rk3288-tinker.dtb \
 	rk3288-veyron-jerry.dtb \