powerpc: dts: t104xrdb: fix phy type for FMAN 4/5

T1040RDB has two RTL8211E-VB phys which requires setting
of internal delays for correct work.

Changing the phy-connection-type property to `rgmii-id`
will fix this issue.

Signed-off-by: Maxim Kiselev <bigunclemax@gmail.com>
Reviewed-by: Maxim Kochetkov <fido_max@inbox.ru>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211230151123.1258321-1-bigunclemax@gmail.com

arch/powerpc/boot/dts/fsl/t104xrdb.dtsi

@@ -139,12 +139,12 @@
 		fman@400000 {
 			ethernet@e6000 {
 				phy-handle = <&phy_rgmii_0>;
-				phy-connection-type = "rgmii";
+				phy-connection-type = "rgmii-id";
 			};
 
 			ethernet@e8000 {
 				phy-handle = <&phy_rgmii_1>;
-				phy-connection-type = "rgmii";
+				phy-connection-type = "rgmii-id";
 			};
 
 			mdio0: mdio@fc000 {