arm: dts: sync the Rockhip 3399 SoCs from Linux

Sync the rk3399 DTs and associated bits from 5.14-rc1.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
(Remove the conflict content for vmarc-som)
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/rk3399-rock-pi-4b.dts b/arch/arm/dts/rk3399-rock-pi-4b.dts
index 4ca970a..6c63e61 100644
--- a/arch/arm/dts/rk3399-rock-pi-4b.dts
+++ b/arch/arm/dts/rk3399-rock-pi-4b.dts
@@ -9,7 +9,11 @@
 
 / {
 	model = "Radxa ROCK Pi 4B";
-	compatible = "radxa,rockpi4", "rockchip,rk3399";
+	compatible = "radxa,rockpi4b", "radxa,rockpi4", "rockchip,rk3399";
+
+	aliases {
+		mmc2 = &sdio0;
+	};
 };
 
 &sdio0 {