Enable secure memory support for FVPs

- Use the TrustZone controller on Base FVP to program DRAM access
  permissions. By default no access to DRAM is allowed if
  'secure memory' is enabled on the Base FVP.
- The Foundation FVP does not have a TrustZone controller but instead
  has fixed access permissions.
- Update FDTs for Linux to use timers at the correct security level.
- Starting the FVPs with 'secure memory' disabled is also supported.

Limitations:
Virtio currently uses a reserved NSAID. This will be corrected in
future FVP releases.

Change-Id: I0b6c003a7b5982267815f62bcf6eb82aa4c50a31
diff --git a/fdts/fvp-foundation-gicv3-psci.dts b/fdts/fvp-foundation-gicv3-psci.dts
index 1bf7234..f9f1ff3 100644
--- a/fdts/fvp-foundation-gicv3-psci.dts
+++ b/fdts/fvp-foundation-gicv3-psci.dts
@@ -36,7 +36,7 @@
 };
 
 / {
-	model = "FVP Base";
+	model = "FVP Foundation";
 	compatible = "arm,fvp-base", "arm,vexpress";
 	interrupt-parent = <&gic>;
 	#address-cells = <2>;
@@ -132,10 +132,10 @@
 			#address-cells = <2>;
 			#size-cells = <2>;
 			ranges;
-			frame@2a820000 {
-				frame-number = <0>;
-				interrupts = <0 25 4>;
-				reg = <0x0 0x2a820000 0x0 0x10000>;
+			frame@2a830000 {
+				frame-number = <1>;
+				interrupts = <0 26 4>;
+				reg = <0x0 0x2a830000 0x0 0x10000>;
 			};
 	};