rockchip: rk3308: Migrate to OF_UPSTREAM

All RK3308 boards has now been synced to Linux kernel v6.8 DTs and can
migrate to use OF_UPSTREAM.

Migrate all RK3308 boards to use OF_UPSTREAM.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index c9f1b25..319ec23 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -92,11 +92,6 @@
 	rk3288-veyron-speedy.dtb \
 	rk3288-vyasa.dtb
 
-dtb-$(CONFIG_ROCKCHIP_RK3308) += \
-	rk3308-evb.dtb \
-	rk3308-roc-cc.dtb \
-	rk3308-rock-pi-s.dtb
-
 dtb-$(CONFIG_ROCKCHIP_RK3328) += \
 	rk3328-evb.dtb \
 	rk3328-nanopi-r2c.dtb \
diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 262cb7c..f1caf4f 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -166,6 +166,7 @@
 	imply LEGACY_IMAGE_FORMAT
 	imply MISC
 	imply MISC_INIT_R
+	imply OF_UPSTREAM
 	imply RNG_ROCKCHIP
 	imply ROCKCHIP_COMMON_BOARD
 	imply ROCKCHIP_OTP
diff --git a/configs/evb-rk3308_defconfig b/configs/evb-rk3308_defconfig
index 04a94e1..f4c2ea1 100644
--- a/configs/evb-rk3308_defconfig
+++ b/configs/evb-rk3308_defconfig
@@ -2,7 +2,7 @@
 CONFIG_SKIP_LOWLEVEL_INIT=y
 CONFIG_COUNTER_FREQUENCY=24000000
 CONFIG_ARCH_ROCKCHIP=y
-CONFIG_DEFAULT_DEVICE_TREE="rk3308-evb"
+CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3308-evb"
 CONFIG_OF_LIBFDT_OVERLAY=y
 CONFIG_DM_RESET=y
 CONFIG_ROCKCHIP_RK3308=y
diff --git a/configs/roc-cc-rk3308_defconfig b/configs/roc-cc-rk3308_defconfig
index ef58bd6..862ea43 100644
--- a/configs/roc-cc-rk3308_defconfig
+++ b/configs/roc-cc-rk3308_defconfig
@@ -3,7 +3,7 @@
 CONFIG_COUNTER_FREQUENCY=24000000
 CONFIG_ARCH_ROCKCHIP=y
 CONFIG_SPL_GPIO=y
-CONFIG_DEFAULT_DEVICE_TREE="rk3308-roc-cc"
+CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3308-roc-cc"
 CONFIG_OF_LIBFDT_OVERLAY=y
 CONFIG_DM_RESET=y
 CONFIG_ROCKCHIP_RK3308=y
diff --git a/configs/rock-pi-s-rk3308_defconfig b/configs/rock-pi-s-rk3308_defconfig
index 37a124e..c15ba3d 100644
--- a/configs/rock-pi-s-rk3308_defconfig
+++ b/configs/rock-pi-s-rk3308_defconfig
@@ -2,7 +2,7 @@
 CONFIG_SKIP_LOWLEVEL_INIT=y
 CONFIG_COUNTER_FREQUENCY=24000000
 CONFIG_ARCH_ROCKCHIP=y
-CONFIG_DEFAULT_DEVICE_TREE="rk3308-rock-pi-s"
+CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3308-rock-pi-s"
 CONFIG_OF_LIBFDT_OVERLAY=y
 CONFIG_DM_RESET=y
 CONFIG_ROCKCHIP_RK3308=y