fix(fvp): extend memory map to include all DRAM memory regions

Currently only the lowest 2 DRAM region were configured in the
TrustZone Controller, but the platform supports 6 regions spanning the
whole address space.
Configuring all of them to allow tests to access memory also in those
higher memory regions.

FVP memory map:
https://developer.arm.com/documentation/100964/1116/Base-Platform/Base---memory/Base-Platform-memory-map


Note that last row is wrong, describing a non-existing 56bit address,
all region labels should be shifted upward.
Issue has been reported and next release will be correct.

Change-Id: I695fe8e24aff67d75e74635ba32a133342289eb4
Signed-off-by: Federico Recanati <federico.recanati@arm.com>