arm64: dts: broadcom: northstar2: Drop unused and undocumented "brcm,pcie-ob-oarr-size" properties

The "brcm,pcie-ob-oarr-size" property is unused and undocumented, so drop
them.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20260106-dt-dtbs-broadcom-fixes-v1-11-ba45874e4553@kernel.org
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>

Author: robherring

arch/arm64/boot/dts/broadcom/northstar2/ns2.dtsi

@@ -154,7 +154,6 @@
 		ranges = <0x83000000 0 0x00000000 0 0x00000000 0 0x20000000>;
 
 		brcm,pcie-ob;
-		brcm,pcie-ob-oarr-size;
 		brcm,pcie-ob-axi-offset = <0x00000000>;
 
 		status = "disabled";
@@ -184,7 +183,6 @@
 		ranges = <0x83000000 0 0x00000000 0 0x30000000 0 0x20000000>;
 
 		brcm,pcie-ob;
-		brcm,pcie-ob-oarr-size;
 		brcm,pcie-ob-axi-offset = <0x30000000>;
 
 		status = "disabled";