fix(tc): modify DPU configuration in dts for TC4 FPGA

TC4 FPGA DPU base addr and irq doesn't match with TC3 FPGA
so refactor the code to manage it accordingly.

Change-Id: Ie31933e0bcbd489945935829940a5c5434e6b1d7
Signed-off-by: Jagdish Gediya <jagdish.gediya@arm.com>
Signed-off-by: Icen.Zeyada <Icen.Zeyada2@arm.com>
diff --git a/fdts/tc4.dts b/fdts/tc4.dts
index 0782093..ae9a0e5 100644
--- a/fdts/tc4.dts
+++ b/fdts/tc4.dts
@@ -46,6 +46,11 @@
 #define VIRTIO_BLOCK_ADDR		60020000
 #define VIRTIO_BLOCK_INT		769
 
+#if TARGET_FLAVOUR_FPGA
+#define DPU_ADDR			4000000000
+#define DPU_IRQ				579
+#endif
+
 #include "tc-common.dtsi"
 #if TARGET_FLAVOUR_FVP
 #include "tc-fvp.dtsi"