rockchip: rv1126: Migrate to OF_UPSTREAM

Migrate RV1126 boards that exists in Linux v6.8 to use OF_UPSTREAM.

Following targets is migrated to use OF_UPSTREAM:

- rv1126-edgeble-neu2 : Board is an industrial form factor
                        IO board.
- sonoff-ihost-rv1126 : Gateway device designed to provide a
                        Smart Home Hub.

Cc: Tim Lunn <tim@feathertop.org>
Cc: Jagan Teki <jagan@edgeble.ai>
Reviewed-By: Tim Lunn <tim@feathertop.org>
Tested-By: Tim Lunn <tim@feathertop.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Anand Moon <anand@edgeble.ai>
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
diff --git a/configs/neu2-io-rv1126_defconfig b/configs/neu2-io-rv1126_defconfig
index dc27b9e..2a4c9b4 100644
--- a/configs/neu2-io-rv1126_defconfig
+++ b/configs/neu2-io-rv1126_defconfig
@@ -5,7 +5,7 @@
 CONFIG_SYS_ARCH_TIMER=y
 CONFIG_ARCH_ROCKCHIP=y
 CONFIG_NR_DRAM_BANKS=1
-CONFIG_DEFAULT_DEVICE_TREE="rv1126-edgeble-neu2-io"
+CONFIG_DEFAULT_DEVICE_TREE="rockchip/rv1126-edgeble-neu2-io"
 CONFIG_SYS_MONITOR_LEN=614400
 CONFIG_ROCKCHIP_RV1126=y
 CONFIG_TARGET_RV1126_NEU2=y
diff --git a/configs/sonoff-ihost-rv1126_defconfig b/configs/sonoff-ihost-rv1126_defconfig
index dfc71b1..4890644 100644
--- a/configs/sonoff-ihost-rv1126_defconfig
+++ b/configs/sonoff-ihost-rv1126_defconfig
@@ -5,7 +5,7 @@
 CONFIG_SYS_ARCH_TIMER=y
 CONFIG_ARCH_ROCKCHIP=y
 CONFIG_NR_DRAM_BANKS=2
-CONFIG_DEFAULT_DEVICE_TREE="rv1126-sonoff-ihost"
+CONFIG_DEFAULT_DEVICE_TREE="rockchip/rv1126-sonoff-ihost"
 CONFIG_SYS_MONITOR_LEN=614400
 CONFIG_ROCKCHIP_RV1126=y
 CONFIG_TARGET_RV1126_SONOFF_IHOST=y