dts: foundation: Add TRBE node for all CPUs

TRBE buffer maintenance interrupt is a PPI which needs to be communicated
from the platform via a DT node.
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Qais Yousef <qais.yousef@arm.com>

arch/arm64/boot/dts/arm/foundation-v8.dtsi

@@ -84,6 +84,11 @@
 			     <GIC_SPI 63 IRQ_TYPE_LEVEL_HIGH>;
 	};
 
+	trbe0 {
+		compatible = "arm,trace-buffer-extension";
+		interrupts = <GIC_PPI 15 IRQ_TYPE_LEVEL_HIGH>;
+	};
+
 	watchdog@2a440000 {
 		compatible = "arm,sbsa-gwdt";
 		reg = <0x0 0x2a440000 0 0x1000>,