cactus: add uart2 to device-regions node

Now first secure partition behaves equally to other secure
partitions. It does no longer have an open access to the
full system peripheral range and devices must be explicitelly
declared in the SP manifest.

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I720beaf6b5874098afee19aafb6d81e53450cdad
diff --git a/spm/cactus/plat/arm/fvp/fdts/cactus.dts b/spm/cactus/plat/arm/fvp/fdts/cactus.dts
index e64d3a8..4529273 100644
--- a/spm/cactus/plat/arm/fvp/fdts/cactus.dts
+++ b/spm/cactus/plat/arm/fvp/fdts/cactus.dts
@@ -67,6 +67,12 @@
 	device-regions {
 		compatible = "arm,ffa-manifest-device-regions";
 
+		uart2 {
+			base-address = <0x00000000 0x1c0b0000>;
+			pages-count = <1>;
+			attributes = <0x3>; /* read-write */
+		};
+
 		test-reg {
 			/* Dummy Values */
 			base-address = <0x00000000 0x22000000>;