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
1 file changed